As for the "quenelle" being anti-Zionist rather than anti-Semitic, are you really that naïve to think that there's a difference?
I think that many in the UK equate Zionism with the abhorrent, racist policies towards Palestinian farmers, living within Israel, which Jack Straw (former Home Secretary) wrote about in the Times earlier this week. A kind of ethnic cleansing which no civilised nation should be party to, and which makes many in the UK feel deeply uneasy. No idea what Anelka meant by the "quenelle" gesture, and if the suspicion is that it was a racially motivated gesture, he will doubtless be punished. I only know what I read about Israel, no more no less, but I have no reason to think that Jack Straw doesn't tell it like it is, as he is one of the few politicians respected by both left and right. If Anelka's idiocy focuses attention on how Israel treats the Arabs within its borders, then maybe it will do some good.