M. Ali Choudhury writes in with a good point: America's Muslims are unlikely to prove as violently anti-semitic as some of the immigrants to Europe. "Muslims in Europe are usually dirt-poor and come from backward regions of their countries of origin. When they come to Europe they and their descendants are usually unemployed or stuck in low-skilled jobs. Muslims in the US tend to have Phd's and white-collar jobs. They're not about to go around shoving bricks through synagogue windows."