In today's Wall Street Journal,Harvard professor Ruth Wisse writes about the ways and means of campus anti-Semitism:

The divestment campaign did not just happen, and speakers assaulting Israel do not appear of themselves. This antipathy to Israel grows from a campus culture that is selectively repressive. All the while that students, in the spirit of diversity, are actively discouraged from making pejorative comments about other vulnerable minorities, some Arab and Muslim students have been actively fomenting hatred of Israel as an expression of their "identity." On campuses with a large Arab presence, such as Wayne State in Detroit, this has resulted in a palpable threat to Jewish students, and outbreaks of physical violence have actually occurred at San Francisco State and Concordia University in Montreal. Since Arab and Muslim students are currently the only ones who exuberantly defame another group, and who blame that group rather than Arab and Muslim governments for the failings of their own anti-democratic societies, it is hardly surprising that they should be joined by others looking for a villain or scapegoat. Anti-Semitism thrives because slandering Israel is the only aggression against a minority that is encouraged by the rules of political correctness.