A toothless task force and other measures haven’t stopped antisemitism from flourishing on campus.

Police broke up a pro-Palestinian encampment at Columbia University Thursday, arresting more than 100 protesters for trespassing. The effort followed six months of violent anti-Israel demonstrations that left many Jewish students and faculty members feeling abandoned. Columbia, they said, has become a hotbed of antisemitism and, apart from rhetoric, the administration had done little to combat it. The question is whether Columbia President Nemat Shafik’s decision to summon the police is a one-time response to an endemic threat or a turning point in the fight against Jew-hatred, one that will set an example for universities across the U.S.

More From The Wall Street Journal (subscription required):