Marge protests against UsefulNotes/MixedMartialArts after Bart gets in trouble for fighting in school.

!! Tropes:

* ActionGirl: Marge turns into one, as well as Lisa at the end of the episode.
* ArtisticLicenseMartialArts: Marge shows her fellow MoralGuardians a clip in which a MMA fighter pounds another on the ground for a ridiculously lengthy time (the clip is sped forward and it still doesn't end). In reality, this is precisely what MMA is ''not''. Referees are tasked to stop the match at the moment one of the fighters is perceived as unable to defend himself anymore and, depending on the individual referee, they might only allow a few extra strikes on a defenseless opponent to be sure he is really so.
* AsHimself: Real life MMA champion Chuck Lidell appears signing autographs.
* DomesticAbuse: Implied when Chett says he feels odd for hitting a woman he ''doesn't'' love.
* FanHater: In-universe with Marge, who's main motivation to have Mixed Martial Arts banned is because she hates it and is appalled by people liking it.
* FrivolousLawsuit: After Homer and Bart watch a fight, Homer tells Bart not to do it at home but at school where they can sue over eventual injuries.
* ItsAllAboutMe: One of Marge's lines states that if she hates something, no one is allowed to like it.
* ISurrenderSuckers: Chett used this strategy to trick Marge. It didn't work.
* MamaBear: Marge becomes an instant martial arts expert when she sees Chett about to hit Bart.
* MoralGuardians: Marge and the group protesting mixed martial arts. She even flat out says that [[UpToEleven "If something isn't to my taste]] [[ItsAllAboutMe then no one should be allowed to enjoy it"]]
* MurderousThighs: Marge finds Bart holding Nelson in an inverted triangle choke in the schoolyard.
* NoCelebritiesWereHarmed: Chett Englebrick seems to be a mix of real life personalities related to mixed martial arts. He is part Dana White, president of UsefulNotes/UltimateFightingChampionship, for leading an UFC expy and being outspoken and brash; part Nobuyuki Sakakibara, chairman of PRIDE Fighting Championships and currently RIZIN Fighting Federation, for his glasses and vaguely smug attitude; and, oddly enough, part Wrestling/VinceMcMahon, president of Wrestling/{{WWE}} (who has nonetheless employed several MMA fighters), for his general character design.
* ShoutOut:
** Chett tries a FlyingKick while Marge is turned away after she believes she has just defeated him, just like Johnny Sun does to break Creator/BruceLee's back in ''Film/DragonTheBruceLeeStory''. However, Marge senses him and turns to knock him out in mid-air, like Mike does to the treacherous Justin in ''Film/NeverBackDown2''.
** The final ImpendingClashShot of the fight between Bart and Lisa and set up to it ape the final moments of ''Film/RockyIII''
* TookALevelInJerkass: Marge's MoralGuardians beliefs became worse as the years go by, but here, she won't allow ''anyone'' to like what she hates.
* WouldHitAGirl: Chett had no trouble with the notion of hitting Marge. He even mentioned he'll fight anyone except a man his own size.
* WouldHurtAChild: Chett said he'll fight anyone weaker than him when Bart challenged him to a fight in an attempt to protect his mother. [[MamaBear Seeing that was enough for Marge to get angry enough to wipe the floor with him.]]