Just what the keffiyeh sanctions and inspires. The new academic year has scarcely begun, and Hamas supporters on campus are already signaling that they haven’t lost a bit of their fanaticism. If anything, they’re even more menacing. An incident at the University of Pittsburgh Friday evening shows that American college and university campuses are becoming increasingly dangerous places for Jewish students and other supporters of Israel, who are being threatened and brutalized all in the name of the “liberation” of “Palestine.”The Pittsburgh Post-Gazette reported recently that a man named Jarrett Buba, who at 52 years old is unlikely to be...