THISNow srsly, there is no rule against offenses. So I just advice you to do what you came to do ingame, which, I presume, is to have fun, right?
If he hates jews for whatever reason, it's his loss,
NO ONE should feel bad or offended because he simply found a group to pick on. It's not like I go crying to the police when a radfem tells me all men are pigs.