The news for Jews at top-U.S. educational institutions is alarming. At Columbia, Stanford, Harvard, Brown and on other campuses, students have been assaulted and insulted, inside and outside the classroom. A month ago, anti-Israel protesters began illegally barricading the main gate to the Berkeley campus and harassing students wearing Stars of David or T-shirts with Hebrew lettering. Two weeks later, the same protesters attacked Jewish students attending an Israel lecture, broke through the door into the lecture hall injuring several students, hurled antisemitic slurs, smashed glass, and choked another student. Because these violent antisemites lack the courage of their conviction,...