Some Jewish students, meanwhile, say much of the criticism of Israel has veered into antisemitism and made them feel unsafe, and they point out that Hamas is still holding hostages taken during the group’s October 7 invasion. Tensions remained high on Monday at Columbia, where the campus gates were locked to anyone without a school ID and where protests broke out both on campus and outside. Kathy Manning, a Democrat from North Carolina who was visiting Columbia with three other Jewish members of Congress, told reporters that there was “an enormous encampment of people” who had taken up about a...