"When we pulled into Argo Port in need of R&R, The crew set out investigating every joint and bar. We had high expectations of their hospitality, But found too late it wasn't geared for spacers such as we! And we're banned from Argo, everyone Banned from Argo just for having a little fun We took a jolly shore leave there for just three days or four But Argo doesn't want us anymore ..."
Other times, this can't happen as the place that would've banned them no longer exists.
Something like this happened to the original Macross. A freak accident causes them to be banned from Utahthe USAthe Earth. This is after they spend several episodes getting back to Earth through the defense of the Zentraedi.
The plot of Karate Shoukoushi Kohinata Minoru is kicked off because the eponymous character has been banned from all functions of his school's gymnastics club, and needs somewhere to live now that he can't stay at their dorms.
In the second season of Code Geass, Zero becomes declared a Persona Non Grata by the Britannian government and, in exchange for the emancipation of one million Japanese. This, however, turns out to be a ploy to disguise those one million Japanese as Zero, getting them all exiled.
Recently in Knights Of The Dinner Table, Nitro Ferguson got banned from GaryCon after his D-Day game ran amok even more spectacularly than games in KoDT usually do.
Happens far too often to LARP goth Walden Woods in Dork Tower; something inevitably gets them banned from their latest gathering spot.
Walden: "Great Clans of Mud Bay, I have called this gathering in the Poochy's Last Stand pet cemetery for one reason!"
Goth: "Because Beef-A-Roo won't let us gather there anymore?"
Paige Fox: My friend over there is on the phone with the cops right now, so I suggest you and your party-crashing pals go back to wherever you came from. Big Party Crasher: That might be tricky — That place called the cops, too.
One Archie Comics story has the gang try, for the sake of variety, to have lunch some place other than Pops'. In each place they try they end up getting booted out due to their personal flaws and character quirks, until the only eatery left is Pops'.
The DC Comics hero Damage was banned from his hometown of Atlanta after he blew it up when his powers first activated.
In the Harveste series, the Addamses are banned from Haiti and Indonesia. Gomez has been banned from Africa for an undetermined amount of time, but as of 1995, has at least ten years left on the ban. Grandmama is accepted as a witch doctor in five countries and banned from the rest of the world.
In the Pony POV Series, Makarov — the Big Bad of Shining Armor's side story — is threatened with this by several countries in order to get him to cease his attempts on Shining's life.
In Casino, Nicky gets his name in a Black Book and is banned from the casinos because of notorious and unsavory reputation. Sam warns him beforehand but Nicky mocks the issue as the book only has two names and the other is Al Capone and continues to generate waves. Then he laments, as the ban hurts his operations.
Is that all Woolworths, or just that particular one?
In The Party, the protagonist is supposed to be blacklisted from Hollywood after accidentally blowing up a movie set. Instead, his name is unknowingly put on the invitation list for an A-list Hollywood party.
Rain Man: Charlie and Raymond get kicked out of the casino for 'counting cards', and are warned not to try this at other casinos either because the word is out about them.
In Dogma, after getting drunk and telling off God, the angels Bartleby and Loki are banned from Heaven by God, setting in motion the events of the movie.
In Little Miss Sunshine, after the fiasco at the eponymous beauty pageant, the family is told that the pageant will not press charges, under the condition that Olive never enter another 'little miss' pageant in the state of California, ever again. The family's reaction to the news amounted to "That's fine with us!"
In Pulp Fiction, Marsellus Wallace revokes Butch's "LA privileges". Given that Wallace just promised to torture a man to death (weirdly justifiably under the circumstances), Butch will probably stay out of LA.
Notably? This was an improvement. Butch initially had a hit out on him for failing to throw a match. It was downgraded to Persona Non Grata after he helped Marsellus out of the circumstances that had Marsellus vow to torture the man.
In an episode of Entourage, Johnny Drama is banned forever from the Playboy Mansion, then he gets readmitted and gets someone else banned from the Playboy Mansion.
In the Doctor Who episode "Tooth and Claw", the Doctor and Rose are banned from Great Britain by Queen Victoria. Not that he cares.
Further episodes cemented his dismal diplomatic track record with multiple British queens.
A recurring trope on Murphy Brown, with Murphy being banned from the White House for various reasons.
On Friends, Ross recounts how he and his first wife Carol got banned from Disneyland for having sex behind the animatronic children on "It's a Small World".
A popular bit of fanon is that after the events of "Upgrades," SG-1 are banned from O'Malley's for the bar fight they started under the influence of Applied Phlebotinum armbands.
Newark, NJ mayor Cory Booker put Conan O'Brien on the "No Fly List" after Conan made a disparaging joke about his city. Conan soon after banned Cory from Burbank Airport, to which Cory retaliated by banning Conan from the entire state of New Jersey, as well as Newark's sister cities around the world. Conan subsequently banned Cory from California. As later revealed, this was all staged.
The humorous introductions given for The Stig often mention him being banned from some location or event.
There are a handful of hosts and musical guests on Saturday Night Live who have caused so much trouble backstage (or on the show) that they can never appear on the show again:
Louise Lasser: Hosted the penultimate episode of Season 1 (1975-76). Michaels has gone on record in saying that Lasser was incoherent during her performance and wouldn't appear in any sketches unless she was by herself or with Chevy Chase.
Chevy Chase: Speaking of which, he's banned from hosting (after doing so nine times, the record for a former cast member) due to his jerkass attitude toward the writers and cast members. He has made cameos in a few episodes, but hasn't hosted since Season 22 (1996-97).
Milton Berle: Hosted the April 14, 1979 episode, and after consistently upstaging other performers, non-stop mugging to the camera, and unscripted performance of "September Rain", Michaels banned him from the show. Berle's episode (along with Lasser's) would not be seen in syndication for twenty years after (and are included in the season DVD sets).
Steven Seagal: Hosted the April 20, 1991 episode, and was banned soon afterwards because he had difficulty working with the cast and crew, often pitching lousy sketch ideas and getting angry that none of them were picked. This was referenced in a later episode (September 26, 1992) featuring Nicholas Cage, where Lorne Michaels responds to Cage's insistence that his monologue made him look like "the biggest jerk on the show" with the response "No, no. That would be Steven Seagal."
Martin Lawrence: Hosted the episode that came right after the infamous Alec Baldwin-hosted show with the "Canteen Boy Goes Camping" sketch (where Canteen Boy (Adam Sandler) is molested by his scoutmaster) in 1994 (Season 19), and got himself banned when he launched into a monologue about the decline in women's hygiene. All reruns have cut off Martin's monologue and replaced it with cards that explain why this can never air on TV again.
Adrien Brody: Hosted in Season 28 (2002-03) and got himself banned after introducing musical guest Sean Paul in a rude boy Jamaican get-up and ad-libbing. There wasn't any profanity uttered; it was just that Lorne utterly hates unscripted performances. Considering the rest of Season 28 note which most fans didn't care for due to the absence of Will Ferrell and Jimmy Fallon's constant Corpsing, this was actually considered a highlight.
It was later revealed that Brody was never banned from the show and this was only a rumor (with Brody even talking about a return appearance in April 2012). Apparently, the rumor was started by none other than Tina Fey (who supposedly hated the idea of having Brody host).
Musical guest Sinead O'Connor was banned after ripping up a picture of Pope John Paul II and calling him 'the true enemy' after her second song (the segment was banned as well, save for an appearance on an SNL DVD special about the show's popular music performances in 25 years. The segment does appear, albeit with Lorne Michaels introducing the piece and telling viewers about the controversy behind it).
Musical Guest Cypress Hill (on the season 19 episode hosted by Shannen Doherty) was banned after DJ Muggs lit a join on-camera (and trashed their dressing room).
Musical Guest Fear (on the season seven episode hosted by Donald Pleasence, which is also banned for its dark, disgusting humor note Doesn't help that it was a Halloween episode), after a profanity-laden and set-destroying performance.
Subverted with Elvis Costello, who was initially banned for playing "Radio Radio" (a song critical of the music publishing establishment, of which NBC certainly was), instead of the planned "Less than Zero" on the season three episode hosted by Miskell Spillman (an elderly woman who wonSNL's "Anyone Can Host" contest). He eventually returned to the show in 1987 (appearing on the episode hosted by Mary Tyler Moore), and eventually took part in the show's 25th anniversary celebration by recreating his song switch.
In the first season of Heroes, Ando and Hiro are banned from all of Mr. Linderman's casinos after they abuse Hiro's powers to cheat at poker. This becomes a problem later in the series, when they need to get back into one of the casinos in order to steal an ancient samurai sword in Mr. Linderman's collection.
In an episode of iCarly, Carly joins an art class after dropping her lessons with Spencer. When Spencer observes the class and freaks out like a jealous ex, ending up in a paint fight with the teacher, the Shay siblings get banned from that building forever. And it's not like they'll forget, because security took their pictures and thumb-prints.
Sam was banned from participating in beauty pageants for a number of years.
As recounted in a retrospective episode, the MythBusters are banned from Esparto, California after the finale of the "Knock Your Socks Off" myth, which involved setting off a huge explosion. The problem was that they underestimated just how big the shockwave would be, so it knocked people off sofas, broke windows, set off car alarms, and knocked down ceiling tiles in the town, and a news report erroneously made it sound like the Mythbusters had leveled the town. As they put it:
"And that's why we can never go to Esparto again."
The Middle: Mike is banned from Brick's school after his attempt to help at the Valentine's Day craft project ends up ruining Valentine's Day.
Happens to Buffy, believe it or not. She heads to Los Angeles for the sole purpose of assassinating Faith, who had sought out Angel to kill her after realizing if she wasn't a monster then she was very close to being one. Instead he's intent on helping her reform. Buffy attacks Angel, defies him and goes after Faith. Afterwards Angel of all people tells Buffy she is not welcome, she reacts by being upset that Faith wins and escapes justice, despite the fact Faith had turned herself in to face the consequences of her actions.
Monk almost ends up this to the San Francisco Police Department in the two-parter pilot episode of Monk due to Monk being forced to let Ian Sykes escape from the police due to a crippling fear of heights (ironically when attempting to stop him himself). Only reason he didn't is because Sharona got Burger to get the SFPD to listen to him again as part of a favor in exchange for getting her to resume working with Monk after he inadvertently ruined her date.
On 2 Broke Girls Caroline Channing is not welcomed at any society functions due to her father cheating thousands of people out of their money. When she gets an invitation to a gala and decides to go, she is stopped at the entrance and it is made clear that even though she has a valid invitation she is not going to be let in. It does not help that while she is trying to clear this up, people who lost money in the Ponzi scheme recognize her and start punching her.
In one Law and Order episode, Jack McCoy has his new ADA use a friend from Federal Prosecution as a threat to get a criminal to plea out in the lesser State Court. The "friend" was not amused and declared the ADA Persona Non Grata.
How I Met Your Mother: Barney gets banned temporarily from MacClarens until he agrees to stop doing magic tricks. Most of the time it involved playing with fire.
Robert Rankin's Brentford Trilogy books frequently involve intrepid protagonists Jim Pooley and John Omally being banned from their favorite pub The Flying Swan by the mercurial part-time barman, Neville. The ban never lasts long, though.
Long before that, in the very first book of the series, Another Fine Myth, it's revealed that Frumple is banned from Deva.
In the Gor series, Tarl Cabot was banned from returning to the city-state of Ar, but that didn't stop him from doing so.
In RA Salvatore's novel Road of the Patriarch Jarlaxle and Artemis end up banned for life from the Bloodstone Lands. Jarlaxle points out that Elves live a long time and he'll probably outlive the ban. Artemis is not comforted by this, being a human, with the attendant shorter life span.
Hrolf the Unruly, the captain of Elfmaid from Starlight And Shadows trilogy by Elaine Cunningham got "a taste for recreational mayhem", which earned him ban from many ports and imprisonment and confiscation in Skullport, which is an achievement in itself. Where he was found under arrest, roaring a song:
Come ashore with the lads of the Elfmaid, my friend.
We're awash on an ocean of ale!
Some taverns to plunder, some guards to sunder,
And then, a short rest in the jail!
In Soul Music, The Band With Rocks In is banished from every city they visit on their Sto Plains tour, on pain of pain and/or being buried alive.
This has happened to a variety of CIA officers with diplomatic immunity who got caught spying in Tom Clancy novels. The consequences for officers or agents who don't have diplomatic immunity and get caught spying tend to be far more severe.
In one of The Dresden Files novels, Harry Dresden is banned from a college bookstore which caters to the supernatural crowd, on account of trouble following him everywhere, and the other patrons and the owner being worried it might follow him there. He gets word of this ban just before exactly that happens. Also, he was talking to his imaginary friend, Lasciel.
In Mister Roberts, it's understandable why the crew of the "Bucket" would not be allowed ashore on Elysium again, after hearing what they did while on liberty there.
In the late 80s and early 90s, various members of X Japan (and occasionally the entire band) were banned from various restaurants, hotels, bars, and drinking establishments around Tokyo and elsewhere in Japan, due to the band's tendencies to start fights. Some bars even had "No Yoshiki" or "No Blondes" (since both Yoshiki and other VK rockers that tended to cause trouble had blonde hair) signs, and the band still holds the record for most damage done to a Japanese hotel. Not just the room, either. The hotel.
At one time, it was almost a point of pride for many punk rock, heavy metal, and hard rock bands to get themselves banned from venues and hotels; typically after trashing their rooms or starting riots at the venues, but also for violating local obscenity laws. Several have been banned from performing in entire states or countries; usually on obscenity grounds.
GWAR was at one time banned from the state of North Carolina, for certain... elements of their costuming.
Bad Brains was at one time banned at nearly every nightclub and performance venue in Washington D.C.
The Who at one time held the record for this, thanks to the antics of the late Keith Moon.
The World/Inferno Friendship Society won't have a chance to play at Cha-Cha's of Coney Island again, after what happened at that one show in 2007.note Supposedly Cha-Cha's even calls other venues the band is playing at to try and warn the owners to cancel the show. Prior to 2003 the band was also banned from a few venues that they'd actually set on fire.
Guns N' Roses can never again perform in St. Louis after the Riverport Riot (in case you don't know, it all started when a bootlegger pressed W. Axl Rose's Berserk Button, and Axl flipped out and left the stage, which indirectly led the fans to riot).
Hour of Penance is almost assuredly banned from Alicante, Spain after an incident where they were scheduled to play a club in the city near the tail-end of a European tour, only to have their performance cancelled. Why? Well, their drummer at the time, Mauro Mercurio, decided to get drunk and wound up causing thousands of dollars worth of damage to a backstage area in the club, which very nearly resulted in the band's arrest and led to Francesco Paoli voluntarily quitting and Mauro being unceremoniously ejected.
During a 1985 show in Switzerland, the Post Punk band Swans were actually arrested onstage and asked to leave the country for being too loud.
Ozzy Osbourne was banned from the city of San Antonio, Texas for a decade, for urinating on a cenotaph outside The Alamo.
The Acacia Strain is on more than a few venue blacklists thanks to numerous incidents where the crowd got violent to the point where significant damage was caused to the venues, resulting in quite a few preemptive bans from other venues.
In the Filk SongBanned From Argo, the former Trope Namer which provides the page quote, the crew of a Starfleet vessel heavily implied to be the Enterprise causes mayhem on the eponymous shore leave planet until they get kicked out.
Well, I tried to talk her out of going home But then I fell flat on the floor; And all I remember is a cha-cha-cha With the bouncer at the door.... —>—
Geordie tunesmith Alan Price (ex of The Animals) tops this with a ballad to his lively girlfriend Rosetta
Well, my litte girl, she's a sweet little girl, She does things to make your eyebrows curl; Let her loose on a Friday night And you know it's gonna end in a fight... Rosetta, are you better, are you well, well, well? —>—
Classic Traveller supplement The Traveller Adventure. During the adventure "Pysadian Escapade" the PCs are railroaded into inadvertently breaking a Pysadian law and end up being banned from the planet.
In Don't Drink the Water by Woody Allen, the main character, Axel, is banned from Africa. He laments that while many diplomats have been banned from various countries, he's the only one to have ever been banned from a continent.
In the first Knights of the Old Republic game, if you end up killing an important fish on Mannan, the planetary authorities ban you from ever coming back.
You can blackmail the authorities and force them to let you return, which is perfectly in line with the previous evil action.
Max: ...and I've been banned from 27 local arcades for playing Forbidden Dance Insurrection in ways that the designers never intended.
The conclusion of Tony Hawk Underground 2- subtitled "World Destruction Tour" - is a news report, which concludes with:
Hugh Jass: And finally, Tony Hawk and Bam Margera, the founders of the World Destruction Tour, have been officially banned from ever returning to Boston, Barcelona, Berlin, Australia, New Orleans, and even Thailand. Upon hearing the news, Tony and Bam replied, "Hey, good call."
At the end of Assassins Creed Revelations, Ezio is banned from Constantinople by the new Sultan Selim, who notes that it's only because his son Suleiman speaks highly of him that he doesn't just execute him on the spot.
In Secret of Mana, the hero gets banned from his hometown after pulling out the Mana Sword because the village elder fears that it will bring monsters to their village.
In Disgaea 4, Fuka Kazamatsuri manages to get herself banned from Celestia forever for insulting Lady Archangel Flonne.
In Slightly Damned, Buwaro and Kieri can never go back to the town of Weyville. Not because they've been banned, technically, but because it's home to a Knight Templar angel who'll kill them if he ever sees them again (and already tried to the first time he saw them).
Punned on in Absurd Notions; after Warren tells his ex-boss Garry that he is sick of Garry's cheesy smile, cheesy banter, and cheesy attitude, and "would appreciate it if (Garry) would remove (his) cheesy self from (Warren's) home and not return ever again", Garry remarks he's apparently "persona au gratin".
After getting kicked out of Florida in one episode, we see the family with an enormous map of the United States. They cross Florida off in a close shot, and the camera zooms out to show that all but 2 states have permanently banned them. Neither of which they're currently in.
Played with in the episode "Lisa the Iconoclast'' where Lisa, and her children, and her children's children are banned from the historical society... for three months!
On "Brother's Little Helper" (the episode where Bart is put on ADHD medication after his latest prank at school), Homer mentions a ten-year ban from the water park that recently ended. Whether this is connected to the incident in season two where Homer got stuck on a water slide due to his weight and the water slide had to be shut down so officials could release him isn't known as it wasn't mentioned outright, making the scene the punchline to a Brick Joke or yet another throwaway line that the writers don't want to flesh out that now stands as a Noodle Incident.
In yet another episode, Bart and Milhouse were banned for life from Comic Book Guy's store (although the "for life" part eventually ended up revoked due to them saving Comic Book Guy's life when he underwent a severe heart attack in the middle of an angry rant). In an attempt to comfort him, Homer tearfully reminisces of his first life-long ban: after eating one of Gallagher's melons during one of his shows, the latter banned him for life from all his future performances and related media.
In one episode, Bart enters the school library only to find his father Homer there doing research. "This library is for students, why aren't you at the regular public library?" "There was some... unpleasantness, I can never go back."
Dr. Hibbert was also banned from the library for reasons never specified other than it relating to Moe Syszlak's actions while Hibbert hired him to act as a body double to distract Bart regarding a flu vaccination.
And they'll never let Homer near Lake Havasu again.
In the episode where Marge conquers her fear of flying, Homer Simpson ends up banned from Moe's Tavern for a prank he committed against Moe on Prank Day. Ironically, his prank (overloading the sugar container so it spills in a soggy manner) was actually safer than some of the pranks played that day, such as having a king cobra nearly bite Moe or causing a fire.
The Simpsons were nearly banned from Springfield by the populace for some of the things they did.
In the Rugrats In Paris movie, one of Charles Finster's potential dates is said to not be allowed in the state of Kentucky.
Also, Cosmo is banned from Atlantis since he sunk it nine times. Therefore, he becomes the number one criminal there. But in the end of the episode, Timmy is the new number one criminal.
After establishing that it was he who made Crocker's life miserable, Timmy is banned by Jorgen von Strangle from going back in time to March 15th to fix that. Jorgen also threatened to ban Timmy from visiting other months of that year if he interferes with the election of "President McGovern".
On Frisky Dingo, Killface and Simon CAN'T EVER GO BACK TO ARIZONA!
Chowder episode "Banned From the Stand" featured Mung Daal being banned from Gazpacho's fruit stand. Mung can't simply buy fruits from another stand because the fruit stand owner code allows Gazpacho to extend the ban to the other fruit stands in Marzipan City. After Mung tried (and failed) to buy fruits under several disguises, Gazpacho became so paranoid he banned everyone... even himself. Because being banned from a stand last for as long as the stand remains, his only way out was destroying the stand and building a new one, from which Mung got himself banned after repeating what got him banned from the first one.
In My Little Pony: Friendship Is Magic, after a trip to the bowling alley, as the Cutie Mark Crusaders leave, Scootaloo says that Mr. Kingpin will probably never let her back in the bowling alley again after making a gutter ball... on another lane. She seems oddly cheerful about it.
In Family Guy, Peter alludes to being banned from Sea World for something when he prepares to explain to Chris what a whale's blowhole is for (or more specificially, what a whale's blowhole is not for), but we never hear it due to the scene shifting. The closest to an explanation given is from Seth MacFarland's in-character commentary for the episode, where he, in Peter's voice, claimed that he had sex with a whale's blowhole.
Archer, Pam, Cheryl, Malory, Lana, Cyril, Ray, and probably the rest of ISIS are banned from Canada after the events of The Limited.
Ray: Au revoir, sweet man-whores of Montreal.
In Gargoyles, Puck spends most of the series trying to find a way to delay his return to Avalon because he finds mortals so amusing. Oberon eventually gives him exactly what he wants by banishing Puck from Avalon forever. Puck falls to his knees begging Oberon to reconsider but to no avail.
At least one musician is banned for life from England's Channel 4 for saying "Fuck" before the Water Shed.
For several years in the late 1980s, a Coast Guard cutter which shall remain nameless was banned from the port of Juneau, Alaska, until the crew (due to the usual billet changes and rotations) was almost entirely replaced. Upon its eventual return, Leslie Fish's filk song made the rounds of the enlisted decks.
Snoop Dogg has been banned from entering the UK, Australia and Sweden on various occasions, and is currently banned from entering Norway.
This is quite frequently the fate of anybody caught counting cards at a casino blackjack table. While card counting mentally is legal, so is banning players for virtually any reason besides discrimination, making Rain Man a case of Truth In Hollywood.
World Memory Champion Dominic O'Brien was banned from every casino in the UK.
Likewise, every known member of the famous MIT Blackjack Team is banned for life from most if not all casinos in the US, including every casino on the Las Vegas Strip.
Rustycon 1995: A Seattle area science-fiction convention already notorious for its wild partying was put into a very fancy Hyatt hotel. The hotel staff was clueless about what to expect, resulting in business guests being put on the same floor as the party wing. Among the highlights were an intoxicated person crashing through a plate glass window, sabotage to the fire alarm, broken elevators, several chandeliers being ripped down, and damage to the lobby artwork that reached the five-figures mark. It took almost twenty years before downtown Bellevue hosted another sci-fi convention.
Also banned from the UK is Terry Jones... Not the Monty Python one. The one that holds Koran burnings.
The man who started the NBA Pacers-Pistons brawl (a.k.a. The Malice at the Palace) got a season ticket revocation and a lifetime ban from the arena.
Kurt Waldheim was Secretary-General of the UN and then President of Austria. He was also maybe a former Nazi intelligence officer. The controversy got so bad that by the time he was President of Austria he was not allowed to enter the United States, or many European countries. Nobody ever found conclusive proof (and at least one author claimed he was framed by Mossad), so Waldheim was never prosecuted.
Richard Gere is banned from China, probably due to the fact that he's openly against China's occupation of Tibet.
The Sheraton hotel chain will not host a Shriners' convention, owing to the extreme rowdiness and damages that tend to follow them. Ray Stevens' song "Shriner's Convention" involved molestation, extreme intoxication, and a motorcycle going off a high diving board; the real ones aren't nearly that sedate. (Bear in mind: it's based on a convention he attended.)
The Bullingdon Club, a near-equivalent to the Shriners (although catering to young Upper Class Twits—with the occasional Upper Class Wit—at Oxford rather than middle-aged, middle-class Americans), are effectively banned from every bar and restaurant in the country for much the same reason, but get around it by the simple expedient of booking function rooms through some sort of shell corporation and writing cheques for the cost of repairing the venue as they stagger away from the wreckage.
During World War II the Allies tried to quarter ANZAC troops in Cairo. The Egyptian government refused, saying that while New Zealanders were welcome, the city was still recovering from the victory celebration the Australian troops gave in the last world war.
Ancient Athens had a procedure known as ostracism, in which people would hold a vote on a whoever was seen as the worst threat to society; the selected citizen would then be banished from Athens for a period of ten years. (Notably, the penalty did not include confiscation of property or any other loss of status.)
Frequently happens on internet forums, for obvious reasons. Sometimes, the members who were banned make spin-off forums, as sort of a "refugee camp" for banned users so to speak. Other people may try to sign up under a different name to keep trolling the place.
Many privately owned establishments, whether they be sports stadiums, restaurants, or retail stores, may ban a specific customer/consumer for life if they done something worthy of the ban. (See Not Always Right)
Chuck Austen was essentially excommunicated from the comic book industry after retailers told Marvel and DC that they wouldn't buy his books.
Adam Sandler was banned from the campus of a Nebraska state college after he was caught getting high with some students after a comedy performance
It's not entirely uncommon for spies, working under a cover of being diplomatic staff at an Embassy (or actual diplomats, spying in addition to their official duties), being ejected from a country after being caught, or sometimes just in response to one of the host country's spies or diplomats being similarly ejected from the other country. Not worth the trouble or fuss to arrest them for spying and cause a diplomatic incident, and it gets the troublesome individual out of your yard.