A massive new anti-Israel tent city took over Columbia University on Sunday, just days after an NYPD raid cleared another intrusive encampment there and cuffed more than 100 protesters. At least 30 tents were sprawled across the Manhattan Ivy League school’s West Lawn along with piles of food and supplies as embattled university officials struggled to contain the growing crisis. The upheaval and threats to Jewish students have become so intolerable that a prominent rabbi at the prestigious school urged them Sunday to stay home — and university officials told them they could take classes online. “We are looking for...