Characterization Marches On: Similar to the episode "Hooked on Monkey Phonics", Butters is shown to be much more foul mouthed like the other boys such as calling the girls "skanks" and "hos". He even shows a bit of harshness since he was the one to point out Clyde being fat.
Before this episode, Cartman never even once implied hes a racist. After what Token (inadvertently) got him into here, its assumed he began his racist tendencies afterwards.
Cartman became a lot more hostile towards Token (and Black people in general) after what Token accidentally got him through.
Hope Spot: Cartman almost makes it to Mexico in Kenny's battery-powered toy truck. Then the batteries run out.
Informed Flaw: Parodied. Apparently Clyde is the second fattest kid in the class. The audience can't tell since his character model is the same size as all the other non-fat kids. It infuriates Clyde to no end, and he hugs Cartman upon his return.
Jerk with a Heart of Gold: Romper Stomper. Cartman also shows signs of this at the end when he brings in all of Disneyland at the end of the episode.
Mistaken for Racist: Cartman is accused of throwing a rock at Token for being an African-American.
Oh, Crap!: Cartman has a brief moment of this when Token doesn't get right back up after being hit with a rock.
Clyde when he realizes he's beginning to act like Cartman.
Out-of-Character Moment: Wendy seems to be cheering on the girls and booing the boys, despite being in a relationship with Stan. Though granted, she has no speaking role in this episode.
Police are Useless: The "high-speed" chase in Kenny's battery-powered toy truck. It moves incredibly slowly, but the police keep their distance at every turn and even duck for cover when the barricade is "rammed."
Kyle: What the hell are they doing?
Positive Discrimination: The only reason Cartman was sent to juvie is because he assaulted a black kid. When he uses the word "black" in court, he's painted as a racist. Ironically this is the least prejudiced Cartman has been.
The police cars that bump into Kenny before toppling on each other is a throwback to The Blues Brothers.
The slow-speed police chase in Kenny's battery-powered Go Go Action Bronco is a reference to the famous OJ Simpson police chase.
Take That!: The juvie kids consider Cartman on their side after he says he doesn't like Animaniacs, a show Trey and Matt are not fond of.
Cartman's overall plot mocks the concept of hate crime laws.
Judge: I am making an example of you, to send a message out to people everywhere: that if you want to hurt another human being, you'd better make damn sure they're the same color as you are! [Everyone just stares blankly]
Stan:[nonchalantly] Oh my God, we killed Kenny. Kyle: We killed Kenny? Stan: We killed Kenny. We're bastards.
Trope 2000: One of four episodes early in Season 4 to have "2000" in its title.
Unwitting Instigator of Doom: Kyle inadvertently causes the problems for the boys. Cartman threatened to hit Token with the rock if he called him fat one more time. Kyle actually said it, but Cartman's back was turned at the time, so he thought it was Token.
Wrong Genre Savvy: Parodied. The authorities think Cartman committed a deliberate act of racism when he really just overreacted to an insult.