Hahahahaha! So true. I got irritated myself on that front recently, when someone I know found themselves on the receiving end of ire for making "Jewish jokes".

I promptly pointed out that as a Jewish person myself (by descent, via my maternal grandmother) I didn't find the joke offensive because 1) I knew the person, 2) I knew the intent, 3) there's nothing inherently wrong with laughing at cultural absurdities, stereotypes, and cliches (which lets face it, have some basis in fact much of the time), and 4) It also happened to be the case that the person making the joke was Jewish too (though I don't subscribe to the notion that you necessarily have to be Jewish to make jokes of this kind - context is everything).

I think what annoyed me more than anything was the blanket assertion that "all Jewish people" would find this joke offensive as though we are a homogenous, Borg-like collective. Some won't. Some might. But a claim like that - especially one made by a non-Jewish person (as in this case) making a professionally offended statement by proxy - is absurd.