Yes, I think it's time for me to bow out as well. I didn't want to join the thread at first because it started oddly and there was a lot of shadow-boxing, which hasn't helped anybody. For the record, I see relatively little antisemitism on MN - though I have certainly seen some. I really joined the thread because I was pissed off at how dismissive and minimising so many posters were being.
But I do want to be constructive, so I'll add to StonedMoses's list.
I start getting twitchy when people start talking about Jews as a group as - or suggest Jewish individuals are highly likely to be - rich, powerful, clannish, tight, vulgar or loud.
I have no problems with people being critical of Israeli domestic and foreign policy. But I think it if offensive, insensitive and ineffective when they suggest that Israel is the most uniquely awful state anywhere ever, or when they argue that Zionism is intrinsically racist (i.e. originally motivated by the desire to oppress others), or when they bleat that 'after what they've been through, you'd think they know better', or when Jews everywhere are held responsible for the actions of Israel.
I have no problems with people being critical of circumcision. But too often criticism of the practice leads to ad hominem attacks on the Jewish people - 'barbaric practice' becomes posters insisting that everyone who would do this must be a sick, evil child abuser. I've also read, many times, that Judaism must be a sick religion if it advocates circumcision. Hey presto, nearly all Jews are sick, evil people. That is antisemitic. Some posters asked how they could criticise circumcision without being accused of antisemitism - well, that day is as far off coming as the day I can defend circumcision without being told I'm condoning child abuse. But I personally would have no argument with somebody who said, "I understand that, for Jews, circumcision is a covenant with God. And that means they view it not just as a loving act, but as an absolutely vital and fundamental expression of their faith. But I cannot get my head round mutilating a newborn for no clinical reason; it is unethical and wrong. Though I recognise the dangers of restricting religious freedom - particularly with a minority population which has faced oppression for millennia - I still believe this act is not acceptable in a secular state". Or something like that.
Do you see the difference? One is anger and blame with a closed mind, the other is emphatic but acknowledging the complexities and sensitivities involved.