The old Disney Channel show Adventures in Wonderland had an episode centered around this, when the residents of Wonderland were nervous about a walrus moving into the neighborhood because they had heard a lot of bad stereotypes about walruses. But Alice herself meets the Walrus and finds out that he's actually a cool guy.
The Alien Nation TV series is largely devoted to the allegory of race relations through Newcomer/Human relations. Matt has a bad habit of using the nickname "Slagtown" for the Newcomer part of L.A., even after his Newcomer partner has made it clear he finds the term offensive. Naturally, the anti-Newcomer groups are fantastically multicultural.
Lampshaded in the episode "The Geometry of Shadows", where it is revealed that the Drazi randomly split up into two groups - the "green" and the "purple" - every few years by drawing pieces of cloth out of a barrel. The two groups then fight for supremacy. Attempts by Ivanova to solve this diplomatically and get them to see the other side's view don't work, since there are no differing views, just "Green fights Purple". Fortunately, she solves it by putting the murderous faction in their opponents' shoes (or should we say, sashes) as she accidentally usurps the position of local leader and upon finding this out, promptly orders them to dye their sashes to their opposing color.
The show also has a backstory that in the face of all kinds of alien races, humans decided that all humans are pretty much like one another and did away with 20th century prejudices, so we get scenes like two male characters going undercover as a married couple with no one batting an eye, and a passing reference to the Pope being female (which resulted in more letters to the show than anything else in it). However, there are a sizable number of humans prejudiced against aliens, and we also get something of the "new black" in humans born on Mars. This gets a lampshade hung in one case where an Asian actor plays his (speciesist) part like a stereotypical "white supremacist".
Racism wasn't too far below the surface in inter-species relations, however. The Centauri and Narn regarded each other as mutually unfit to live. Anti-alien racism appeared commonplace among humans not associated with either the station or the Rangers. The Minbari had anti-miscegenation laws and considered purity of the species so important that they forced Valen's children to flee Minbar.
Human telepaths have a general mistrust for the "Mundanes", and vice versa. According to the canonic Psi-Corps trilogy, the reveal of the existence of telepaths has resulted in massive witch hunts and lynchings of suspected psychics. The original Psi-Corps was actually led by a secret telepath, who tries to use the organization to shelter telepaths from Mundanes and prepare for the coming war with the Shadows. However, after his death, the leadership of the Corps went to a racist Mundane, who promptly had many high-ranking telepaths assassinated because he didn't trust them. There's also plenty of bad blood between Psi-Corps and "blips" (as the Psi-Corps telepaths call their rogue brethren).
In the new Battlestar Galactica (and arguably the old one too), Humans and Cylons don't get along very well. As it goes, we discover that Humans and Cylons can reproduce! The humanoid Cylons are constructs of a completely fleshy nature, which makes the "toaster" epiphet just stupid. Like real-world epiphets. They call all Cylons, humanoid or mechanical, "toasters", and the humanoids also get called "skinjobs".
There's the Sagittarons as well, who are looked down on by the other Colonials for their primitive, isolationist ways. Ironically "skinjob" Athena is grateful for their presence on Galactica, as it diverts attention from her.
The main characters have less issues killing a demon than they do a human, but most demons are simply following a tradition, ritual or their inborn nature - there are references to particular demon species being extinct and in one Buffy Season Six episode, "As You Were", Riley Finn mentions a demon species which is unfortunately not extinct yet. It is never made clear whether this species is peaceful or not, though.
There's a very Anvilicious treatment in "That Old Gang of Mine" (Angel season 3 ep 3), in which Gunn's former gang are slow to learn that Not All Demons Are Evil, while all the major characters had caught on long ago and quickly.
The Buffy episode "Family" revealed that Tara's family harbors an incredible hatred for magic-users and raised her to believe that she was part demon on her dead witch mother's side. Shockingly, Tara's racist cousin Beth was played byAmy Adams.
Lorne: anyone who sees a green-skinned, horned demon immediately assumes he's a big nasty killer, when of course he's a lovable lounge lizard. Not entirely their fault, though, since most demons are indeed the people-killing kind.
A lot of demons look down on vampires, presumably as a result of how near they are to human, and because they're fairly low on the demonic totem pole due to their modest supernatural capabilities and large number of weaknesses. Some demons might also be jealous that vampires get all the press, while their immense variety is grouped under "demons". The demon brothel in Angel won't service vampires.
Although none of the in-series werewolves have encountered any, there are parties and individuals that think lycanthropes are abominations that should be eliminated.
There have been arguments that Buffy's pursuit and slaying of vampires is tantamount to this; if the scope exists for vampires to seek redemption for themselves (Spike's journey to regaining his soul at the end of S6note Word of God says that his mission to "make (him) what he was, so Buffy can get what she deserves" is about trying to get his soul back so he can love her, not getting rid of his chip so he can attack her; James Marsters, on the other hand, wasn't buying it), then killing them as soon as they come out of the ground is little more than a racist genocide justified with the no-longer-entirely-true "but they're EEEVIL". On the other hand, Spike seems to be the only vampire ever to seek out the return of his soul, and one of only two whose soul has been restored (the other against his will). If there were a race of a million people that had two members that had ever been redeemed, with the rest evil serial killers, it is doubtful that killing them would be considered wrong. One could still argue, however, that with Willow's power by the end of the series, she might have been able to restore many vampires' souls, thus making killing them unnecessary. The argument rumbles on.
Riley has this at first. He blasts the Scoobies and Willy the Snitch for harboring Spike and serving demons at his bar respectively, and later made negative comments on Willow's relationship with Oz, a werewolf. He grows out of it.
Glory doesn't even try to hide her revulsion for humans and human things, or vampires for that matter.
Forrest. As he puts it:
Forrest: I see a demon, it dies. End of story.
Being raised by Holtz has caused Connor to be prejudiced against demons. At one point, he openly referred to Lorne as a "filthy demon". Vincent Kartheiser (his actor) even likened him to a kid who was raised by a racist. This includes half-demons as well, which also gives him a dash of Boomerang Bigot: he attacked Cordelia with a knife when he discovered she was half-demon.
There was a lot of this towards Cole's demonic half in Charmed.
Witches, of course. In one episode, Bruce Campbell appeared as a Witch Hunter who was such a fanatic that he was willing to kill a woman who all evidence suggested was not a witch (her mother was apparently one, and that was good enough for him).
The Dark Side had a lot of infighting, especially after the Source was killed. Vampires are immensely disliked (to the point of being banished from the Underworld) and Warlocks are viewed with disdain by several other evil entities (going by "Muse to My Ears").
The whole idea that demons cannot love, in how it fluctuates throughout the show, almost functions as an unintentional analogue to internalized prejudice.
On Dark Angel, the transgenics become targets of Fantastic Racism as soon as their existence is made public. The Familiar breeding cult are posterchildren for this, looking at humans as inferiors and transgenics as scum.
In "Utopia" the homophobia version is used when the Doctor is uncomfortable around the time-travelling omnisexual Captain Jack Harkness, not because of his sexuality, but because he finds Jack's immortality to be "just wrong".
Jack: So what you're saying is, you're, uh... prejudiced? The Doctor: ...I never thought of it like that. Jack: (smiles) Shame on you.
The Doctor shows his dislike of true immortality in earlier serials as well. For example, in "The Brain of Morbius", he blasts the Sisterhood of Karn for using an elixir to extend their lives because they've completely stagnated, and says that regeneration is preferable because it brings change. This attitude seems to be shared by other Time Lords, who use the same elixir as medicine, but not to prevent their final death.
This is the entire premise of the climax of "The Five Doctors". When they encounter the Tomb of Rassilon and Borusa is condemned to eternal stasis as the price of true immortality; the First Doctor clearly knew what the fate of anyone who sought such immortality would be, and states that Rassilon knew that "immortality is a trap", and therefore set up his game to ensnare anyone who actively sought it.
The best example in Doctor Who is the Daleks, especially since Terry Nation based them on the Nazis. Also, "Genesis of the Daleks", shows that on pre-Dalek Skaro, the Kaleds (the race that became the Daleks) and the Thals hated each other, and both of them hated the mutants, to the point that the Thals (who were usually shown as pacifist allies of the Doctor) used them as slave labor.
The Daleks' commitment to their own racial purity was demonstrated in "Victory of the Daleks". The older, less "pure" Daleks willingly allow themselves to be disintegrated by the newly created Daleks made from the pure DNA in the Progenitor device.
In the first season of New Who, the Daleks have been reborn from human DNA, and hate themselves as much as humans. It's stated that this prejudice makes them even more angry at the world, in the manner of the stereotypical homophobic gay person.
The Daleks in audio drama "Blood of the Daleks" go out of their way to destroy a group of Daleks created from humans, despite these Daleks considering themselves Daleks and are willing to work with the original Daleks.
The Silurians, the reptilian original rulers of Earth, call humans apes and have often tried to wipe them out. However not all Silurians are like this and often the humans are shown to be just as racist towards the Silurians.
The Ninth Doctor also calls humans "stupid apes" from time to time, although his feelings towards the human race are generally affectionate and he notes them a couple of times to be one of his favourites. He's presumably frustrated by human behaviour because he loves the species so much. Which is a bit racist as well.
During the Eleventh Doctor's retirement in Victorian England in "The Snowmen", he displays a lot of this towards his Sontaran ally, insulting his race's looks and suggesting Sontarans are entirely stupid, directly to his face.
The Time Lords seem to have this attitude towards other races. Originally humans weren't even allowed on Gallifrey. The First Doctor seems to show a bit towards humans Ian and Barbara, treating them as primitives, which by his standard they are.
The Fourth Doctor openly treated Leela like a subhuman - her culture is roughly Neolithic but with the use of metal weapons and with some Schizo Tech elements - and mocks her about it, calling her names and making her believe nonsensical things just because he can. While in most of his stories he retains a respect for her intelligence and she calls him out on it whenever he underestimates her or becomes unnecessarily cruel, this fluctuates depending on how good a grasp of Leela this week's writer has. In skilled hands he comes across as a VitriolicTrickster Mentor whose relationship with her is intentionally uncomfortable but ultimately loving and respectful, but in unskilled hands as a racist, bullying Jerkass.
In Falling Skies there is a lot of prejudice towards aliens by humans, even towards those who are their allies.
Happens quite a bit in Farscape, especially with the Peacekeepers - all of whom are Sebacean (with the exception of half-Sebacean, half-Scarran Scorpius), and who deem other species to be inferior. If a Peacekeeper is to spend prolonged time and contact with another species, they will be deemed "irreversibly contaminated" and rejected.
Half-breeds are also the subject of considerable discrimination by the Peacekeepers, with at least one honor killing on record. Once again, Scorpius is the exception, having proven himself too valuable to execute. Of course, anti-hybrid sentiment is discouraged among Scorpius' troops and officers:
Akkor: A Luxan-Sebacean hybrid? Braca: Despite Peacekeeper Command efforts to keep the bloodlines pure, there seems to be a few more of them every cycle. Scorpius: (Emerging from the shadows) Have you got something against hybrids, hmmm? Braca: (very quickly) No! Of course not sir. Not at all.
This is actually part of the setup of Jim Henson's Fraggle Rock. The Gorgs mostly treat Fraggles as garden pests and the Fraggles thus see the Gorgs as ogrish monsters. The Fraggles mostly treat Doozers as being on the level of social insects, and conversely, the Doozers have... let's say complicated feelings towards the Fraggles eating their constructions. On top of all of this, the humans don't even know any of the other races really exist. Many of the episodes dealt with the various characters getting to understand each other, and were often quite poignant.
Actually, the Doozers wanted their constructions to be eaten by the Fraggles (they made them out of radishes after all), but they initially thought of them as anything but noble and intelligent; ironically, it was the two seemingly DUMBEST, laziest of the Fraggles that convinced the Doozers they were wrong about the fraggles.
Get Smart's Hymie the Robot complains that people look at him funny in the street, he can't get a cab, and even Max never takes him to his club.
In Grimm centuries-long brutal persecution of Wesen is common. Monroe even says that Pogroms and Witch Hunts were actually anti-Wesen attacks and also Nick’s ancestors sometimes killed even peaceful and harmless Wesens like the Genio innocuo. There’s also Wesen on Wesen racism; Monroe’s parents at first don’t approve Monroe’s relationship with Bree because he’s a Blutbad and she’s a Fuchsbau (nor they approve Moroe’s and Nick friendship because Nick is a Grimm). Also a long term animosity between Blutbad and Bauerschwein exists. Monroe also seems to believe that Mauzherz are dirty (or at least shouldn't run a restaurant).
Danko of Heroes is the poster thug for this trope. Anyone with an ability is automatically a threat as far as he's concerned.
Noah was this at first. When his first wife was killed by a telekinetic, he automatically gains an irrational hatred for all evolved humans, which gets the attention of Thompson and the Company. However, it begins to subside when he realizes that his own daughter, Claire, is an evolved human herself. However, he still shows hints of it from time to time, particularly in Volume 5, which Samuel attempts to exploit for all its worth to convince Claire to turn against Noah and to convince the others at the Carnival to join him in trying to change their status as "second class citizens" by making their identity known and trying to become the dominant humans on Earth.
Samuel Sullivan is the opposite end of the spectrum. He wants to kill all humans.
Highlander had a group of Watchers who went rogue and wanted all immortals killed off, calling them 'abominations'. They were known as the Hunters and were led by the brother in law of Duncan's Watcher friend Joe Dawson.
In a somewhat screwy application of this trope, KITT on the original Knight Rider is prejudiced against motorcycles. I repeat: not against bikers, against their vehicles. This is played for laughs, not unreasonably.
In The Legend Of William Tell Aruna, who is descended from wild cats, hates both Drogo, descended from wolves, and Alvar, an actual dog. She gets over both within a couple of episodes. Drogo is only slightly wary of her, reasonable given he's just survived a massacre, and Alvar seems to like her perfectly well.
The various Fae in Lost Girl have very low opinions on humans. They barely tolerate Kenzi, think she's Bo's property, and often snub her.
In "Mr. Monk and the Naked Man", Monk's antipathy to nudists seems to be his SUBSTITUTE for racism, as it is carried to a degree weird even for him. He rants that they are a "cult" and we should "ship them back". Ship them back where? Well, that's the problem.
Parodied in the Mr. Show sketch "Byron De La Beckwith VII: Racist in the Year 3000."
In Power Rangers Time Force, in the future most humans look down on mutants, genetically inferior beings that are the trash and leftovers of the Designer Babies program. This is not aided by the fact that the most prominent mutants in the series are anarchist terrorists, although how much of that is caused by growing up in a society that hates them, and how much is the cause of society hating them is very, very debatable.
In The Sarah Connor Chronicles, the relations between humans and machines are strained, to say the least, especially between the human Techcom resistance fighters and the reprogrammed Terminators working under them. This is especially prevalent among Sarah Connor and Derek Reese, who are both prejudiced against machines (for good reason). At one point late in the second season, when Riley is killed, both Sarah and Derek immediately blame Cameron for it despite a lack of real evidence she was behind it, and both consider destroying her because of it.
Also, the disapproval expressed by pretty much everyone towards John and Cameron's relationship seems rather reminiscent of the prejudices against interracial relationships. Sarah implicitly states that she does not believe that Cameron actually loves John, and the idea that the two might be having sex plays a role in an extended dream sequence meant to represent her anxieties; Derek is openly hostile to their relationship; and Jesse even goes out of her way in order to try and break them up.
One entire episode, "The Last Voyage of the Jimmy Carter," dealt with the inherent distrust between humans and the machines. It got to the point where the human Too Dumb to Live submarine crew, under the command of a Terminator with specific orders from John Connor, began to mutiny because they did not trust the submarine's captain.
It's that distrust that causes all the deaths among the crew and the loss of the submarine.
On Saved by the Bell, the "Malibu Sands" episodes feature an example where a character's dislike of an entire state borders on this. Stacy Carosi initially has a rather fervent and irrational hatred of people from California, openly accusing them all of being airheads and Surfer Dude stereotypes, and declaring that she has no time for their supposed ditziness because "I'm from the East Coast." However, her Foe Yay with Zack eventually turns into a romance and she ends up changing her mind about Californians, and Stacy actually ends up transforming into a friendly, Reasonable Authority Figure towards the end of her arc.
In the Seinfeld episode "The Yada Yada", Jerry is convinced that his dentist Dr. Whatley converted to Judaism just so that he can tell Jewish jokes. When he ends up talking to a priest about it, he tells a dentist joke. The joke gets back to Whatley and he claims that it is offensive because of all that his people have been through. Kramer even calls Jerry an "anti-dentite". At a wedding, he runs into another dentist who calls him an "anti-dentite bastard".
One episode actually subverted it, which involved an armored vehicle, whose driver insisted on calling it a tank, while everyone else referred to it as an APC. At one point, the driver blows up when one of the main characters calls it an APC, screaming out "tank", causing T. C. McQueen (one of the two "in vitros" on the show) to say there's no need for insults, when the guy was just correcting them.
Teal'c in Stargate SG-1 is the victim of this on more than one occasion, since Jaffa are more usually seen as the mooks of the galaxy's longtime oppressors the Goa'uld. Also subverted in "The Other Side", where the Eurondans dislike him not because he's a Jaffa, but because he's black, and they're Space Nazis.
For the most part the planet Hebridan is a pretty harmonious mixed-race society between the Hebridian humans and the Serrakin who freed them from the Goa'uld. But the Big Bad of "Space Race" tried to rig the eponymous race so a pure human would win instead of a Serrakin or mixed-breed. His excuse was that he perceived a pro-Serrakin glass ceiling to his own advancement in the planet's main Mega Corp.. In actual fact, he hadn't been promoted or gotten a raise in so long because he was under investigation for corruption, but they didn't have enough evidence to indict yet. Nice Job Fixing It, Villain.
Stargate Atlantis: When Michael reverts back to Wraith(ish) and escapes the humans, he expects to easily realign himself with the Wraith. To his dismay, they treat him with the same amount of disdain as they do humans (possibly more since he's not even useful as food); this causes him to reject both humans and Wraith and try to wipe them both out as a result.
This was a favorite subject for Star Trek: The Original Series. Probably the most Anvilicious example was "Let That Be Your Last Battlefield", which featured an alien who was black on the left side and white on the right being chased by an alien who was white on the left and black on the right.
Then there was Star Trek: The Next Generation episode with an Aesop about homophobia delivered by a genderless species. Who were all played by women so that the audience wouldn't be subjected to Riker kissing someone played by a guynote FWIW, Jonathan Frakes pushed for the love interest to played by a guy.
In Voyager episode "Repentance", Voyager helps a damaged Nygean prison transport. Neelix finds out one race, the Benkaran, make up a tiny proportion of the population in Nygean space, but are over-represented in the judicial system. But a Bekaran prisoner, Joleg, proves by his actions during an attempted breakout that he seems to deserve his sentence.
The Cardassian occupation of Bajor was unabashedly portrayed by the Cardassians as being racially based. And, in turn, Major Kira serves to show that most Bajorans consequently despise Cardassians with a racist-like fervor, although it's more understandable because she views them much as a 1945 Jew would view the Gestapo.
The first season episode "Duet" explores the other side of the coin: not all Cardassians were evil butchers or liked what their countrymen did to Bajor. The episode centers around a Cardassian filing clerk who impersonates one of the most brutal concentration camp operators in order to get himself publicly executed and force Cardassia to acknowledge its atrocities. At the end of the episode, after being found out and released he's murdered by a Bajoran in a hate crime. Even Kira agrees that being Cardassian is not reason enough for murder.
On a few occasions in both Star Trek: The Next Generation and DS9 Chief O'Brien has to deal with the question of whether or not he developed a racist dislike of Cardassians as a result of his experiences of fighting against them as a combat soldier in an earlier war.
Quark and other Ferengi constantly gripe about stereotyped traits they dislike about various races, especially humans, who they refer to as "Hu-maans" in what appears to be a mild epithet. In a Take That to Sisko, Quark makes the point that citizens of the Federation hold the Ferengi in contempt since they're a reminder of their capitalist history.
AIs tend to get the short end of the stick too; characters routinely refuse to believe that Data or the Doctor could have similar rights to biological organisms, and other Zimmerman holograms are subjected to a form of slavery.
An episode of DS9 "Take Me Out to the Holosuite" featured a Vulcan Starfleet captain who openly espouses Vulcan superiority to humans, has written dozens of academic papers on the topic, and even commands a Starfleet starship with an all-Vulcan crew. And yet, amazingly, no-one in Starfleet seems to have a problem with this other than Sisko, for whom it is personal rather than on principle. This flagrantly racist behaviour is never labelled as such, even when the captain challenges Sisko and his crew to a game of baseball just to further underscore the point that Vulcans are so superior, they can even beat humans at their own game. Sisko's crew naturally lose, since Vulcans are biologically faster and stronger than humans and most of the Niners have never played baseball before, but they achieve a moral victory nonetheless. He even keeps up his anti-human ranting afterwards, despite half the Niners team being non-human.
The Changeling Founders of "Star Trek: Deep Space Nine" mistrust and look down on all "solids", which is essentially anyone who is not a Founder. They justify their racism by claiming that they endured persecution and violence from "solids" in the distant past.
Some Changelings are still the targets of fantastic racism. In the DS9 episode "A Man Alone", Odo is a suspect in a Bajoran's murder, and an angry Bajoran mob vandalizes his office and threatens to kill him.
A continuing theme of Star Trek: Enterprise, as this prequel series dealt with mankind's initial reactions to new life and new civilisations. Early season episodes include the Suliban being treated like potential terrorists because of the actions of the Cabal, the Vulcans' patronising attitude towards humans (and the human response to it), and Commander Shran — an Andorian who despises Vulcans and Tellarites, and even refers to his friend Captain Archer as "pinkskin". He refers to all humans as "pinkskins" — did he not notice the variety of human skin? In "The Breach" Dr Phlox has to persuade a patient to receive treatment from him as the Denobulans committed atrocities against his species in the past, while Trip's attempt to help a repressed minority in a tri-gendered species has a tragic end. Virtually the entire fourth season touched on this trope in one way or another. Xenophobia on Earth increases after the Xindi attack, radical group Terra Prime tries to make political capital over the Trip/T'Pol relationship by squicking out humanity over the idea of Vulcan-human hybrids (even T'Pol's mother brings up "the shame" that such a mixed-race child would feel). And the whole Übermensch thing naturally comes up with the genetically-superior Augments. And let's not even get into Vulcans shunning those who use their telepathic powers because they spread Vulcan AIDS...
The humans and angels in Supernatural tend to dislike each other on principle. One angels or another is always calling humans filthy and primitive worms or maggots, due to their mammalian biology, short lives and to protest how angels were created by god to be the indentured servants of mankind. Humans (particular the main characters) mainly just hate the angels because they are sick of getting messed around, and because monster hunters instinctively hate sentient non-human beings. Dean repeatedly calls them "dicks with wings". Most angels behave pretty badly in-series but lots of them aren't totally evil or are as sympathetic as the humans( Cas, Anna, the members of Cas' garrison who disapproved of the apocalyptic plans got slaughtered, the Cupids) and they are all able to feel and express humanlike emotions.
Despite Dean and Castiel being fairly close friends, Dean continually makes racist comments about the angels, often when Cas is standing right next to him. This might be justified given Dean's experiences and personality, but sometimes you have to wonder why Cas doesn't call him out on it, or physically assault him more often. It's almost like Cas agrees with Dean's assessment. Maybe he's just a Boomerang Bigot?
Lucifer hates everything that isn't an angel. Even his own demon followers. Especially his own demon followers.
When Castiel becomes a god, he takes on the sentiments of the other angels, calling Dean an ant at one point.
The Leviathans look on humans as nothing but a food source, and view all demons and non-Leviathan monsters as even lower life forms than that; Dick Roman in particular describes Crowley, and demonkind by extension, as nothing but "bottom-feeding mutations" and "lazy, ugly, gold-digging whores."
Teen Wolf: Though it may be justified as werewolves are dangerous creatures, the Hunters' treatment of Derek in "Pack Mentality" comes off looking almost like a hate crime.
As does Aunt Kate's invading Derek's home and taunting him with the description of her 'murdering Derek's sister and cutting her into pieces for bait' in "The Tell."
Victoria Argent commits suicide after being bitten by Derek, preferring death to becoming a werewolf, even though she knows that it is possible to retain self-control as one. Her husband actually helps her kill herself, and her father-in-law endorses the act.
In The Tribe, the Technos, a powerful technologically advanced tribe, look down on anyone else who isn't them.
True Blood is drama-series with classical 'Vampires vs Humans' theme. Vampires stand in for a number of groups. Vampires resemble homosexuals by "coming out of the coffin" to reveal their presence to humanity, and are opposed by fundamentalist Christian groups, who call them evil. Sometimes they resemble racial minorities. In one scene, Bill is mistreated and called "boy" by an classic, racist southern cop. Humans who have sex with vampires are dubbed fang-bangers and looked upon with scorn by most people, as mixed-race couples were in the past.
There's also racism within the supernatural community. Shifters such as Sam hate werewolves, and werewolves hate werepanthers (weres tend to stick to their own species).
Sookie lampshaded this in a recent episode where she says it's hard to keep track of which supes hate which.
On Wizards of Waverly Place there are definite problems between wizards, werewolves and vampires. Giants seem to be more accepted but there are still tasteless jokes.
Don't forget the Monster Hunters, who were prepared to hunt down Juliet and her entire family simply for being vampires, despite the fact that they hadn't hurt anyone!
Except for the thousands of people they killed.
Well, Juliet is nice, but her parents are understandable...
They also apparently imprison tons of monsters, which is probably justifiable for some, but one that we're shown basically does nothing but be a Deadpan Snarker (the manual Justin gets says that's its only tool for survival. It makes you wonder if the wizards are paranoid or just jerks).
The half-wolves of The 10th Kingdom. Granted, wolves are predators and are traditionally viewed as evil and vicious (at least sometimes). But the at-times Anvilicious words and actions of the Little Lamb Villagers (and Wendell) more than once left this editor feeling a bit ill. (Which was surely the intended effect—just an example where the writer did their work a bit too well.) Choice examples:
From the rigged trial (itself hearkening back to the legal woes of many a black man in the South between Reconstruction and the Civil Rights Era):
Virginia: Look at my client! Is he a killer? No! But he is a stranger, and stranger equals wolf, and wolf equals killer. Is that what we're saying? Judge: Very well put, on to the sentencing!
After Virginia agrees to defend Wolf:
Virginia: I don't think he killed anyone! Tony: That's what you want to think. There's a dead girl out there, that could've been you! He's a wolf, that's what wolves do! Wendell: That's the first intelligent thing you've said, Anthony.
At the same time, Sally and the other shepherdesses' (all noticeably Caucasian and mostly blondes) lustful pursuit of (dark-haired) Wolf despite his fake surname and his bushy wolf tail suggests the supposed irresistible temptation of an exotic race... while the Peep boys' apparently violent defense of their sisters' purity, and Wendell's assumption in Kissing Town that Wolf would "have [Virginia] on her back before you can say Happy Ever After" resonate far too strongly with the sort of black-man-rapes-white-woman fears exemplified in Birth of a Nation to be coincidence. Again, this would be simply an Anvilicious way of addressing racism in a fantasy setting, the entire point of this trope—in this case, in order to make it relevant to any children in the audience. Basically, Simon Moore showed his work, and the fact the treatment of wolves/half-wolves comes off as so disturbingly familiar is due to the blatant, but entirely necessary, use of this trope to make a point.
Played with in a Chappelle's Show sketch that featured a black mummy, black wolfman, and black Frankenstein's monster who believe everyone is prejudiced against them... because they're black. At no point do they consider that people might be prejudiced against monsters instead. Of course, most of the time that isn't the case either. Only the mummy actually faces any prejudice (although it's not clear whether it's because he's black or because he's a mummy), while the other two bring it upon themselves by acting like dicks, while having an Everything Is Racist mentality when people try to call them out on their behaviour.