I   think the issue is not so much his comment, but the fact the next day he refused to apologise, or even acknowledge that the comment may be   offensive. Which would make the reason for resigning stupidity, rather than anti-semitism...

BTW, has anyone questioned what the party was for? To celebrate 20 years of Chris Smith (Labour, ex minister), coming out as the first openly gay MP. Is this just a party for the friends of the mayor, at taxpayers expense? Or a real celebration of diversity and tolerance, at taxpayers expense?