In the same vein, given that Joan is Jewish, this is why I get to say that she gets to tell such a joke. (Note: I didn't say it was funny. In fact, I freely admit it: I didn't get her joke.) But if tons of Holocaust victims were to protest her joke and say it wasn't funny, then I think that trumps her being Jewish. Because she's not a Holocaust victim and they are. I haven't heard of them doing that though.