Cartman ends up in jail after committing a "hate crime." His hate crime? Throwing a rock at Token.
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South Park Season 4 Episode 2 Quotes

Romper Stomper: There's two kinds of kids, kids who like Animaniacs and kids who don't like Animaniacs, so which one are you?
Cartman: Well, personally, I ...don't like Animaniacs?
Romper Stomper: Neither do we!

Kyle: We won again!
Token: That's not fair! Cartman's ass is so fat, he makes your sled go faster!
Cartman: Hey! Don't call me fat, Token!