From New York and Los Angeles to Atlanta and Austin, Texas, a surge in student activism has manifested in protest encampments and other demonstrations, drawing significant police crackdowns and sometimes appearing to attract outside agitators. The protests also have emerged as the latest flashpoint in the internal Democratic debate over the war. Nearly seven months after the Israel-Hamas war began, the demonstrations convulsing college campuses nationwide are exposing fresh tensions within the Democratic Party over how to balance free speech protections and support for Palestinians in the Gaza Strip with concerns that some Jewish Americans are raising about antisemitism. As...