America’s colleges and universities ought to advance the public interest by serving as bastions of old-fashioned liberalism. If they did, they would champion free speech. They would establish communities of scholarship, teaching, and learning grounded in civility, toleration, and equality under law. And they would transmit knowledge about the sciences, social sciences, and humanities while cultivating students’ capacity to ask questions, listen attentively, examine evidence, formulate their opinions, and persuasively convey their views. Instead, America’s colleges and universities purvey…