The mob is out in force, toting Torches and Pitchforks and demanding blood. All that stands between them and their target is our hero. The hero gives a speech, and the mob is ashamed. Dejected, they turn and leave.
This sometimes works on a Powder Keg Crowd as well, but only if done before the violence breaks out. Once the riot starts, nobody's listening.
Occasionally subverted by having the mob stop in their tracks, hear out the speech... and then keep right on with what they were doing. When it works, almost guaranteed to be an instance of Verbal Judo. Compare Talking the Monster to Death. Sometimes rather than the hero giving the speech, it's a Character Witness or Zombie Advocate. If the speech is only meant to delay the mob rioting until The Cavalry arrive, the character is Holding the Floor. If a character points out the extreme danger of what they are doing, or if they demand that someone else do it, and the character shoves it back on them, and they stop, it's Who Will Bell the Cat?.
In Porco Rosso, a gang of air pirates ambush Porco and threaten to trash his plane in an effort to get even with him, and are stopped only by Fio appealing to their sense of honor.
From One Piece, the people of the Ryuugu wanted to kill a World Noble who was stranded in the island as retribution for their treatment as slaves. Queen Otohime stops them with one sentence.
Otohime: " The children are watching."
Kotetsu from Tiger & Bunny tries to call out Sternbild's government for twiddling their fingers while the terrorist group Ouroboros is launching a city-wide attack. As it turns out, he's not very good at this impromptu monologue thing.
Kotetsu: You people are despicable! The entire city is at stake, and all you care about is protecting your own self...uh, your own...
Mayor: Our own what?
Kotetsu: You know, your own... er, that thing you have.
Barnaby: Self interests.
Kotetsu: Yeah, that's it!
This is how Satou brings the Club of Heracles's plan crashing down around his ears in Ben-To.
In Attack on Titan, when soldiers panicked and threatened to desert after the Titans' assault on Trost to spend their last moments with their loved ones, Commander Dot Pixis - knowing that executing soldiers and causing a bloody riot was the last thing humanity needed - gave this Rousing Speech.
Titans are terrible creatures, and once someone gives in to that fear, they can never fight one of them again! Those of you who have already experienced that dread are free to go away! FINALLY! Those of you would let their parents, siblings and loved ones to experience such terror for themselves... are all free to walk away!
In issue 210 of The Uncanny X-Men}}, Kitty Pryde, Colossus (in human form) and Magik find a mob about to beat a depowered Nightcrawler. Judging that using their powers would only make things worse, Kitty proceeds to shame the crowd, one at a time, until they leave. ("He scared my kids!" "YOU scare ME! Should I beat you senseless?")
In Y: The Last Man, since all the men have died the US Government has become dominated by Democrats, who elect women more frequently. A mob of shotgun-toting Republican Wives try to storm the White House to demand their husbands' political offices, but are talked down by the President (Who is, herself, Republican).
Attempted in Courtney Crumrin and the Fire Thief's Tale, when a mob of townsfolk corner and plan to kill a group of Gypsies who they (correctly) believe to be werewolves. Knowing that the Gypsies aren't dangerous, a woman from the town tries to shame them out of it, asking them how they'd feel if they shot a child and found out the Gypsies were ordinary people after all. It doesn't quite work, though no Gypsies die.
Sonic and Sally attempt this with an audience swayed by Mina Mongoose's "Anti-NICOLE" protest songs in Sonic #221, by explaining who was really in control of her actions, what she was doing when she was a Fake Defector, and pointing out that she was the one who saved most of their butts during the invasion. It doesn't stick.
After an EMP knocks out Gotham's electricity in The Dark Knight Returns, the city turns into a war zone of fire, looting, and gangs. Retired Commissioner Gordon talks the mob into turning from looting to firefighting.
At the climax of the film Young Frankenstein, the monster, made newly articulate, manages to do this.
Downplayed twice before; the first time, a respected elder tells a group of people that they should not chase Dr Frankenstein away, until they are sure he is creating a monster. The second time, he speaks to the mob, pitchforks and all, and explains that "A riot is an ungly thing... undt, I tink, that it is chust about time ve had vun."
In Footloose Reverend Shaw delivers these to his parishioners when they try to stage a book burning. It also serves as a touch of a What Have I Done in that they thought they were doing what the Reverend told them to do.
Parodied in The Animal. When the mob has the main character cornered, his black friend suddenly confesses to being behind it all. The mob stops and disperses, not wanting to be known for lynching a black man.
Also subverted earlier, when one of the mob members who keeps asking questions finally asks what the viewers are thinking:
Mob Member: I was just wondering...is this really the right thing? Are we sure this man did anything wrong? And even if he did, is it really right for us to kill him over it?
Mob Leader: Back of the mob.
Mob Member: Back of the mob?! But I got here three hours early for this spot!
Mob Leader: Back of the mob.
Mob Member: This mob blows. (goes to the back of the mob)
Mob Leader: Any other questions? Good, let's go.
Subverted in M, when the peculiarly sympathetic childkiller protagonist Hans Beckert gives an extremely moving speech about how everything he does is the product of mental illness, not genuine malice. He also notes that while he is insane and can't control his abhorrent actions, the criminals who are attempting to lynch him are criminals entirely by choice. The angry mob don't listen, but he manages to buy himself enough time for the cops to arrive and arrest everyone present.
Subverted in the 2008 Horton Hears a Who! where Horton tries a rousing speech to explain to the mob why he is so devoted to protecting a speck on a clover which contains a microscopic community on it. At the end, even the Sour Kangaroo notes that the speech is moving, but immediately orders Horton bound and caged anyway.
Subverted in the theatrical cut of A Knight's Tale when Chaucer, who has previously demonstrated his ability to work a crowd, tries to shame the mob that's gathered around William, who is in the stocks for impersonating a knight. He's pelted with vegetables before he can even get started.
However, in the extended cut of the film, Chaucer succeeds in Shaming the Mob into chastened silence before Prince Edward steps in. This scene was cut to beef up Prince Edward's role.
In It's a Wonderful Life, there is a run on the Building & Loan and a mob is demanding all their money. George Bailey shows up and explains that the money is not there because it's been loaned to their friends to build homes. He calms them down and convinces them to take out just enough to get by, thereby saving the Building & Loan.
Done well in the 1953 biographical film Martin Luther and especially well in its excellent 2003 remake, Luther. Martin is horrified both that his best friends are being burned at stake for heresy—an unfortunate touch of Truth in Television—and that his supposed followers and converts to a way of peaceful reform have instead decided to take up arms against Catholicism, looting and pillaging churches and Spalatin, even killing a priest. Martin confronts them at the steps, fiery-eyed.
Martin: You think this is my work?! This is never my work!
Martin: The people's work? The...people's work...?
(He shakes his head very slowly, turns his back on them and walks away; the mob falls silent)
Subverted in The Muppet Movie, where Kermit gives a speech to Hopper about all he's learned during the film about the importance of friends and family. Hopper simply scratches his head and then orders his men to kill Kermit.
Artie delivers such a speech in Shrek the Third. The speech turns inspirational, with a hilarious ending:
Artie: If there's something you want to do, or someone you really want to be, then the only one standing in your way... is you.
Member of the Mob: Get him!
Clerks. "Bunch of easily-led automatons! Try thinking for yourselves before you pelt an innocent man with cigarettes!"
Occurs in The Elephant Man, when Merrick is out on his own and is discovered by a crowd at a train station, who begin beating him due to his disfigurements. He screams "I am not an animal! I am a human being! I am... a man." which stops the crowd dead in its tracks, as they realize exactly what it is they are doing.
The scene of Pocahontas saving John Smith has been highly inaccurately dramatized to resemble this but Disney is only partially to blame. The originator of this story is John Smith, himself. He's the only one who was there who claimed it happened.
One chapter of The Buddenbrooks takes place while a wave of revolutionary uprisings sweaps over Germany and an angry mob of workers gatheres in front of the council building. The council members decide to hole up and wait for the crowd to disperse, but when it gets close to nightfall, two of them go outside to see what the protesters want. When one of the workers shouts that they want a republic, he is reminded that the autonomous city has been one for centuries. When someone blurts out "then we want another one!", the protest pretty much instantly falls apart and everyone is quitly returning home.
Scout, from To Kill a Mockingbird, in both the book and the film, is unexpectedly present when a lynch mob comes for the accused rapist Tom Robinson. Recognizing one of the men, she gives the speech — out of sheer innocence — and breaks the mob up. While this is quite possibly the Trope Codifier, it's also a rare example when the shaming of the mob is entirely unintentional.
Subverted in that the "mob" dismisses the shamer as a lunatic, and carries on anyway.
Also also see Mark Twain's Adventures of Huckleberry Finn. Subverted in that the shamer, Colonel Sherburn, probably deserved the lynching; he'd shot a harmless man in the street, in broad daylight.
The footnoted analysis of this scene takes up about half a page in This Troper's edition of the book, which basically boils down to "Twain is using this to satirize the Southern code of 'Justice.'"
Twenty pages into the first Commissar Ciaphas Cain, HERO OF THE IMPERIUM! novel, Cain marches into the middle of a riot in the mess hall on his troopship and promptly starts yelling at the participants about the abominable state of the room and orders them to go get mops. Also a Bavarian Fire Drill.
As does Vimes, with an especially poignant example in Night Watch.
There is also the vicious tongue lashing Lady Ramkin gave to the mob who were attempting to lynch the stunned dragon when they threw rocks at the Night Watch (who were trying to arrest it). She delivered it dressed in a torn nightdress and a pair of rubber boots and cowed the entire mob:
Lady Ramkin:Who did that? I said, who did that? If the person who did it does not own up I shall be extremely angry! Shame on you all!
There is also a villainous example when the vampires do it in Carpe Jugulum.
An odd variation occurs in the first book of Terry Goodkind's Sword of Truth series, the hero attempts to shame a mob who are out to Burn the Witch! - literally, as their target is The Obi-Wan of the series, who happens to be a wizard. His speech fails to convince anyone. It's followed up by the mysterious woman openly threatening them, but not knowing what she is, they aren't impressed. Instead, The Obi-Wan manages to scare the mob into backing down, by threatening them with the magic powers they are going to burn him for having. As he says to the others, "Too cold *points at Richard* , too hot *points at Kahlan* , just right *points at himself* ."
Subverted in the Enders Game sequel Xenocide: Grego shames the living hell out of a mob of his fellow villagers... But only after they had already accomplished most of the damage they'd intended. (Even worse, it was Grego's mob in the first place.)
He started shaming them before they accomplished the damage. It didn't help, though.
Sir Jacelyn Bywater, a minor character from A Song of Ice and Fire, tries to employ this (offstage; we hear about it from another character) in the Battle of the Blackwater, when the men of the City Watch are abandoning their posts. He has almost shamed them into going back and fighting?-when someone shoots him in the throat with a crossbow.
The dwarf Tyrion Lannister uses the same technique successfully in the same battle, when trying to organize a sally. Tyrion's forces are outnumbered, and while his masterful military tactics have levelled the playing field somewhat, they've also turned it into a fiery hell for all combatants. When the Hound returns from the battlefield and refuses to go back into the fire, Tyrion announces that he personally will lead the next sally. The soldiers are either too rattled by the Hound of all people being too scared to go back, or hold Tyrion in complete disdain. Tyrion gets on his horse, looks at the soldiers, and tells them, "They say I'm half a man. What does that make the lot of you?"
Later subverted when the Hound is on "trial" by the Brotherhood Without Banners for the various atrocities committed by his brother and other Lannister soldiers. He gives a speech calling them out and pointing out he's not personally guilty of the murders. Arya Stark interrupts, pointing out one murder he is guilty of: namely, he chopped her friend Mycah, an innocent peasant boy, almost in half.
In Treasure Island, Long John Silver's men are getting tired of waiting for the treasure he says he's leading them to, and are prepared to kill him. He manages to turn the situation around by asking which of them had desecrated his Bible to make the Black Spot, the traditional declaration of impending death.
In I, Claudius, Germanicus uses this to put down the mutiny of his troops on the Rhine. It helps that he has sent away his young son Gaius, whom the troops have come to view as their mascot and good-luck charm. The precious tyke walks around the camp in a miniature legionary's uniform complete with miniature caligae — army sandal-boots — so the soldiers have affectionately nicknamed him "Little Boot", or, in Latin, "Caligula". Yes, that one.
In The Good Earth, when a starving, angry mob attacks Wang Lung's home in hopes of taking its non-existent food, O-lan shames them for trying to steal from someone equally as poor as them.
In C. S. Lewis's The Voyage of the Dawn Treader, when they find the last of the lords they are looking for, the sailors are of the opinion that they should stop going on. Caspian tells them that they are assuming that he will let them all go.
A silly example in The Lions of Al-Rassan, in which the merchant-turned-warrior and the legendary assassin together defuse an angry mob with humor and then tell them off for fighting amongst themselves with enemies approaching the city.
A Charisian Guard manages to do this to a mob forming outside a church in Manchyr in the fourth Safehold novel. Unfortunately, he didn't manage to do it to the people who had organized the mob, who manage to restart it.
Subverted in Septimus Heap, since Jenna's speech to the RatStranglers doesn't stop them at all from hunting down the rats in Spit Fyre's kennel.
Waco does this in the short story "A Man Called Drango Dune" in Arizona Ranger by J.T. Edson.
Played straight and subverted in Gone with the Wind. When the Yankee Army reaches Tara, with the intent to destroy it, Gerald O'Hara informs them that they'd be burning the house over the heads of three sick women. The Yankee officer not only keeps Tara from being burned, he also sends for an army surgeon to care for the women. On the other hand, he decides to use Tara as his army headquarters, and they do considerable damage to the rugs and furniture, as well as steal any possessions they can find, along with the food and the livestock and destroy the vegetable crops in the process. They also burn all the cotton the family needed to sell for money.
In Kristin Lavransdatter, Kristin is outside her parish church, accused by Jartrud of adultery with Jartrud's husband, Ulf. This makes an angry mob assemble, because many of the townspeople were secretly thinking the same thing. The visiting bishop, seeing that things are getting out of hand, reminds everyone that weapons are forbidden in the church yard, and sends everybody home to cool off while he starts an investigation. When the crowd assembles again later that day, most of them are regretting listening to Jartrud and are now willing to hear evidence of Kristin's innocence.
Judge Dee does this often. It's even used in the original Van Gulik based his on, where instead of defeating the highwaymen, he gives them a Rousing Speech on the virtues of justice, and they're so moved they join him.
One chapter of Janet Kagan's Mirabile deals with mysterious forest fires, and at one point the townsfolk want to leave a man they think has been setting the fires to die in them. Susan puts herself between the mob and the man and tells them off, personally calling out a couple she thinks should know better. She doesn't stop them, but she does hold them long enough for Annie to get there and break things up with force of personality and a "persuader" full of rock salt.
Eric Flint's 1632 series inverts this, when a Powder Keg Crowd is prevented from turning into a mob by Mike Stearns. He does this by turning it into a political rally, starting with "People of Germany, rejoice!" and keeps giving speeches until the air force shows up for a flyby.
Another novel has a priest ineptly attempt this, failing miserably, and then having soldiers violently disperse the mob. The fact that he was haranguing a mob of Italians in Spanish was the first of many things the priest did wrong in his efforts to defuse the situation.
Live Action TV
The X-Files: “War of the Coprophages”: Scully attempts to control the mob with a speech about how they are giving in to panic. The mob ignores her and creates havoc. , , 
The classic Star Trek episode, "The Devil in the Dark" had Kirk and Spock protect a horta from vengeful miners by telling them that the Monster Is a Mommy and had legitimate reasons for attacking them since they were inadvertently destroying her eggs. Fortunately, the combination of shame of the miners realizing the carnage they caused and the exciting proposal that the hortas can help them mine is enough to turn the mob around.
Episode "Miri" had Kirk guilt a mob of kids out to lynch him. They were actually around 300 years old.
Subverted in the "Mummy Daddy" episode of Amazing Stories. An actor in a highly-restricting mummy-suit is caught by a lynch-mob of bloodthirsty Redneck Hicks. As they are preparing to hang him, an angelic-looking young child suddenly steps forward:
Child: I dunno. He looks like a good mummy... Actor:(muffled by bandages) Yes! Good mummy! Good mummy! Child: But we better not take any chances! String 'im up!!
Sykes does this in The Movie premiere of Alien Nation, when the mob takes Fantastic Racism too far for even his tastes. Better yet was one of the mob was a black man in his mid to late 30s. The series is based in the the late 80s and early 90s. Sykes truly shamed him as he lived at the birth of the Civil Rights movement.
Played with in the Pilot of Deadwood, a Mob has come to kill a prisoner and the Sheriff tries to talk them down. They're having none of it, so the Sheriff hangs the prisoner right there (even helping to break his neck) so the mob wouldn't have the satisfaction of torturing him.
Andy does this a couple times to the citizens of Mayberry in The Andy Griffith Show. Seeing as this is Mayberry we're talking about, the "danger" any mob poses to a target is never more serious than humiliating or making someone feel bad about themselves, though.
A possible crossover with Real Life from Rev Hammer's album Freeborn John, based upon the life of "Freeborn" John Lilburne. From the very moving song Battle of Brentford:
Nehemiah Wharton- Parliament soldier: My own regiment the Redcoats of Colonel Holles suffered the heaviest losses. We began to fall back to the town of Brentford sir, and when Brookes regiment saw our faces and our losses, well, they began to retreat also. Ah! who could blame them? Captain Lilburne, well, he rode after us all, he grabbed our colours sir and bid all those with weak hearts to march back to London, but calling on those with the spirits of men and the gallantry of soldiers to follow him back to Brentford. We turned and followed him as a man sir, for five or six hours without powder, match or bullet we disputed the town.
In The Protomen, Protoman actually calls out a crowd on being too passive, asking if there's no one among their ranks who is brave enough to make a stand. The crowd remains silent, counting on Megaman to fight him.
Also qualifies as a Tear Jerker, because Protoman desperately wants them to prove him wrong and rise up against Wily. They don't.
Several times in the book of Exodus, God Himself has to show up to stop the cranky and tired Israelites from rioting, though for the most part that was less literal shaming and more "cut it out before I smite you".
Jesus Christ stopped a stoning by challenging the mob: "Let he who is without sin cast the first stone." Nobody did.
In the book of Acts, a clerk of the city of Ephesus stops a rioting mob of silvermakers by pointing out that if they have a grievance against the Christians for "stealing" their business (by no longer worshiping Diana, the patron goddess of Ephesus, and thus not buying statues of her), there's the courts for that, and they run the risk of attracting the ire of the authorities if they keep up this nonsense.
On October 5, 1789, Queen Marie Antoinette mounts a window balcony and curtsies to the angry mob that had converged on Versailles. At first stunned and silenced, they begin shouting, "Long live the queen!"
One of many stories about Joshua Norton, first and only Emperor of the United States, says that he broke up a mob of anti-Chinese rioters by standing in their way, head down, reciting the Lord's Prayer. They left without incident.
In an unusual version of this trope, Emperor Norton was later arrested for vagrancy, but the judge not only refused to prosecute, he gave the arresting officer a dressing-down, saying that Emperor Norton "had shed no blood, robbed no one and despoiled no country — which is more than can be said of his fellows in that line".
In another real-life example, though a bit less unruly than an actual mob, George Washington managed to discourage the Newburgh conspiracy, consisting of officers of the Continental Army that sought to start a military coup against Congress, by making a heartfelt speech to them claiming that he had gone gray and almost blind in service to his country. Many of the conspirators were brought to tears by Washington's speech.
What makes that a Crowning Moment of Awesome is that it wasn't Washington's words that first pulled it off. Though that was when some began to cry, he first managed to shame them by putting on his spectacles. The man had presence.
Washington: "Gentlemen, you will permit me to put on my spectacles, for I have not only grown gray but almost blind in the service of my country."
During the Australian Aboriginal "Freedom Ride" of 1965, in one small town there was a mob of angry white men who threw things at the Aboriginal freedom riders... until one local Aboriginal woman called out some of their names and revealed they had been sleeping with the local Aboriginal girls. She did this in front of their wives. The men had no choice but to am-scray.
When Napoleon returned to France, a group of soldiers were sent to kill him. When they got to him, he said something to the effect of "If you would shoot your Emperor, then do it." They, of course, didn't. Not only did he talk his way out of being shot, he talked them into deserting and joining his army. After that, the King of France sent out an army of his own to take down Napoleon, and Napoleon did it again. After that, Napoleon sent a message to Louis saying something along the lines of "My dear cousin, please stop sending soldiers to apprehend me, I have more than enough troops already."
Gaius Julius Caesar famously quelled a mutiny of his troops by addressing the rioters as "Quirites" ("Civilians"). You know what that means ... According to one theory, this was supposed to be a form of shaming them, as Caesar had always referred to his soldiers as his comrades or his brothers/soldiers in arms. Referring to them as Quirites (Citizens) was a rather blunt way of implying that they had already discharged themselves from his service by their mutiny. He offered to pay them their dues for the past 15 years and discharge them immediately because he claimed he did not need them. Reportedly, all the soldiers begged to be forgiven and taken back into his army.
Gaius Octavian once shamed an angry mob besieging the Curia and threatening to burn the senate alive for not not making Octavian dictator. He talked them down into having him made Grain Commissioner instead.
A Hackney resident named Pauline Pearce famously stood up and chastised a lot of the rioters in the London riots of 2011, becoming an internet sensation when a video of her doing so went viral, and she gained much acclaim from the press and politicians.
Thomas More, a play written in the 1590s, has its title character persuade a xenophobic mob to put down their weapons by appealing to their sense of justice and promising that none of them will be executed. William Shakespeare wrote that speech (but not most of the rest of the play). They do surrender, and get executed.
In Knickerbocker Holiday, when it seems that Brom is finally about to be hanged and has run out of the sort of tricky suggestions that have prevented him from being hanged in the first act, he tells the council that they should be acting on their own authority like they used to rather than take orders from a dictator who has people executed if they don't. The council then rebels against Stuyvesant and refuses to hang Brom. Stuyvesant then moves to order his lieutenant to open fire on the crowd, but the narrator intervenes.
The Nameless One gets to do this at a certain point in Planescape: Torment, sort of. He talks various rioters, looters and anarchists into abandoning their rather ill-timed plans and working together to reverse the city of Curst sliding into the plane of Carceri.
Happens in the first chapter of The Witcher, although it's debatable on whether the witch Geralt defended deserved it or not. It's also up in the air on whether Geralt shamed the mob, or scared them off by threatening them with violence.
The mob definitely deserved it since they were trying to burn an innocent witch just because a religious nutjob told them to.
It's debatable - the witch calls out a very specific god before she's burned. And she does try to convince Geralt by screwing him, so it looks like she's grabbing at straws.
Early on in Neverwinter Nights 2: Mask of the Betrayer, if you spared Okku and he joins you, you'll soon afterwards be confronted by a mob of spirit bears who want to punish Okku because his attempts to contain the Spirit Eater curse doomed his race to madness. With a good enough diplomacy skill, you can throw their charges right back at them by asking them that if they were in Okku's position, would they have simply let the curse run rampant, or would they try to stop it somehow. The mob then goes silent until the leader admits that they would indeed try to stop it.
An inversion pops up in Mass Effect 2, during Tali's treason trial. If Shepard managed to keep Kal'Reegar and Veetor alive, s/he has the option of rallying the crowd in Tali's defense, which causes the mob to shame the judges into letting Tali off.
In The Inexplicable Adventures of Bob!,here, Bob chews out the angry mob (actually just four people, but Heywood had to form it on short notice) that has been hassling Molly, and they sheepishly agree to mind their own business.
In an episode of Goof Troop that involved a parody of Frankenstein's Monster that resembled Pete, Peg asked the angry mob just what the monster had done to them, any of them, that would warrant them trying to kill it. They couldn't think of a single reason to justify harassing the monster, and consented that what they were doing was shameful.
"Rosebud", The Simpsons. Maggie has a teddy bear which belonged to Mr. Burns, and Burns has taken away television and beer from the town until the bear is returned. An angry mob comes to confront Homer and takes the bear away, but when they see how Maggie feels, they remorsefully return it. As Dr. Hibbert laments, "We've given the word 'mob' a bad name."
Then, at Principal Skinner's suggestion, they all head off to sing and volunteer at a hospital and head out with a cheery song
A variation appeared in "Bart After Dark". A mob of Moral Guardians is about to tear down the Maison Derriere, a burlesque house, when Homer leads the mob in a big song and dance number about how much it's a part of their history. It works. In an odd variation, the Maison Derriere is destroyed anyway by Marge, who wasn't there for the song. So apparently, the speech was very convincing. Marge promptly tries to re-incite the mob with her own song, but accidentally releases the brake on the bulldozer she had brought.
Played with when the Mob at first starts to take his speech as further incitement.
Homer: My friends, stop! Sure, we could tear this place down... (Mob starts rampaging) WAIT! My friends, stop! Let me finish. We COULD tear it down, but we'd be tearing down a part of OURSELVES...
Also, in the episode "Whacking Day", Lisa, Bart, and Barry White manage to shame a mob who are about to gleefully club to death every snake in Springfield, as per the holiday tradition.
Subverted to Hell and back in the O.J. Simpson episode: When the mob reaches the Griffin house to lynch O.J., he stops them by acknowledging his mistakes and concludes that he isn't perfect, then asking anyone else who isn't perfect to stand with him. Then when the entire mob has come to stand with him, he pulls out a knife, kills three of them, and runs off.
Subverted on Camp Lazlo: an angry mob has run Almondine out of camp for not wearing a wig (don't ask), when Patsy and the rest of the Squirrel Scouts step between them and announce that it's not the wigs that make them pretty. They proceed to take off their wigs, hair, noses, eyes, etc. to show that they're still gorgeous on the inside. The mob isn't shamed, but the walk off out of disgust and annoyance anyway. Then everyone starts dancing.
On Jimmy Two-Shoes, Jimmy tries this on a mob that's trying to capture a space alien. It fails.