In November, Columbia University students staged a protest against Israel’s war on Gaza. There was a “die-in,” an art installation, and a list of demands, among them that the school administration publicly call for a ceasefire and divest from companies implicated in Israel’s violence. The protest concluded with students singing “We Shall Overcome.” A day later, Columbia suspended two of the student groups who had co-sponsored the demonstration. Senior Executive Vice President Gerald Rosberg called it an “unauthorized event” that “proceeded despite warnings and included threatening rhetoric and intimidation.” Now, those groups have sued the school. On Tuesday, the New...