Ethnic humour has become one of those things we don't do well anymore, or simply won't do because nobody wants to lose their job. Back when it was still tolerated – about fifteen or twenty years ago – what was left of ethnic humour (as practiced by comics like Dave Chappelle or Chris Rock) was gatekept by a single, unbreakable rule: you can only make an ethnic joke if you're a member of the ethnicity that's the butt of the joke. Now, of course, this is largely off the table because nobody thinks the risk is worth it anymore. I...