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You know, if you think about it the society of My Little Pony is extremely racist. Like, they even went so far as to replace "Everybody" with "Everypony", even though it's shown from Episode 1 that there's other species??? Also, all of them (until later seasons and arguably even the movie), they are all explicitly evil except for Model Minority Spike! Also, the towns are all named for how Pony everybody in them is! From Ponyville to Canterlot, it's just pony shit. It's like if we named Dallas "Whitepeopleville"
Also, there's segregation! In Twilight's "School of Friendship", - which, I should note, is opened to teach other races friendship, because of course it's a concept exclusive to Ponies - the (PONY) school inspector wants to shut it down because he doesn't want to mix pony students with other races!
Finally, we need to talk about Applejack. She has a southern accent, and wears a cowboy hat. Cowboys were initially created to hunt down Runaway Slaves. Applejack is direct evidence of Pony Slavery! Confederate States of Ponyville, much?