Students demonstrate in support of Palestinians on the Columbia University campus in New York City on Monday. (Caitlin Ochs/Reuters) Tensions over the Israel-Hamas war have flared at elite universities in recent days, as roughly 150 pro-Palestinian demonstrators at Columbia University and Yale University were arrested. The crackdowns came as Passover, a major Jewish holiday, approached Monday evening and politicians and organizations expressed fears for the safety of the Jewish community. Now encampments are sprouting up at institutions across the U.S. in solidarity, while colleges are taking actions to control the protests. Here’s a closer look at what’s been happening at...