I'm liberal (around 60-70% of my beliefs can be called liberal) so it's not surprising that I often find myself keeping liberal company, here in the United States and with the friends I've made abroad, in particular, several European countries such as Italy, Germany, and the U.K. (yeah, I know, that's not Europe). In the U.S. any conversations that begin on the topic of the Israeli/Palestinian issue nets me, at worst, some sarcasm and contemptuous looks. When I talk to my European friends about it the hostility that came from them was such that I sometimes wondered if I was actually safe.
If one believes that Israel is the aggressor in this situation, no different than South Africa during Apartheid, then one is going to be rather open about that, and believe me the "coffee talk" in Europe runs very much along those lines, like Europe in the end of the 19th century/ beginning of the 20th century regarding the Jews.
Have to cut this short. Gotta run.
But I get your point, I think there is a big difference between the opinions of most Europeans and most Americans on this conflict. It looks like most Americans (from my experience on this forum) would rather support Israel (and give a lot of weight to the right of Israel to defend itself), while more Europeans (from my experience in real life) would side with Palestinians (because they give more weight to the situation of Palestinians in Gaza). For example, I'm not left wing and neither are my friends, yet many of them like Noam Chomsky (who is American btw), while this guy seems to be considered as an extreme-left joke by most Americans on this forum.
However, it's quite exagerated to compare the situation with the violent antisemitism that existed in most of Europe until the 40's. People may look very radical about the "settlements" or the "security fence", but I don't think I know anyone who is antisemite (= one that would consider that Jews are somewhat inferior or different) or who wants Israel to disappear.
The Proof of the Arizona law being racist is... the Arizona law. I know that you will deny that ONLY people who look Mexican will be asked about their legal status so don't bother.
If you expect people to be rational, you aren't being rational.