When Meghna Nair, a second-year student at the University of California, Los Angeles, saw a masked group of people headed toward the pro-Palestine encampment on campus late Tuesday evening, she expected trouble. “I knew where they were going. I had an idea what they planned to do,” she said. “I didn’t know what to do.” But the violence that unfolded on the public university’s campus overnight and the slow response from authorities shocked Nair and other UCLA students. Late Tuesday night, a masked group surrounded the encampment in solidarity with Gaza, throwing fireworks and violently attacking students. Students and reporters...