And why the hell would nuclear weapon protesters pacifists support Islam over Judaism?
I think it may have something to do with over-identification of Islam with Palestine ad Judaism with Israel in regards to that particular conflict.
And this is something I really hate about many groups of people - assuming everyone sees the world in the same terms that they do. For example, many Christian fundamentalists see the world as a conflict between G-d and Satan, between good and evil. Anyone who opposes individual Christian aims, such as supporting gay marriage, believing in evolution, or tolerating Islam, must be a knowing servant of evil. Racists similarly assume that everyone else thinks in racial terms.
Yeah, according to those guys, whenever I see a straight person I look for ways to seduce them and bring them into the queer lifestyle because I actually serve Satan and want him to win, because I do it for the evulz. And when I get my right to marry who I love, I'm going to hold all the Christians hostage at gunpoint and force them to watch us kiss and make out, and then I'll force them to worship our unholy union... actually, they'd probably just enjoy that. Oh, and apparently I'm also scheming to destroy the goyim, and my denial only makes it more true because we Jews are all trained from birth to lie, after all. Anyway, I'll be rejoicing once the Son of God is forced to suck the greasy cock of the Dark Lord, while I and his other faithful followers cavort in victory.
I think fundamentalism like that is partially due to a basic misunderstanding of how people actually think. I wouldn't be surprised if a lot of homophobes simply don't know many openly queer people, or if a lot of racists simply didn't know many blacks/Jews/Hispanics/etc.