I have an idea...aside from the ignorance, the biggest problem is essentialism, right. We're doing regions of the US right now, so I stuck in history about the South of course. But they can make dialogues, and I could make them have a dialogue where they have to pretend to be people in the South during desegregation or some shit. Not all black people, or I might come off as trying to put down the Chinese or something (like, 'you guys are 'colored' too, you have to play the black part.' yeah, bad). But otherwise, trying to put yourself in another situation is good. And I need to stop lecturing or they'll never improve their English. :P