There is an organized and growing effort to push back against the cancel culture on college campuses. Thousands of conservative and libertarian scholars and academics are standing up and issuing a ringing endorsement of academic freedom. It’s called “The Philadelphia Statement on Civil Discourse and the Strengthening of Liberal Democracy” and has been signed by such luminaries as Robert George, Christina Hoff Sommers, Ayaan Hirsi Ali, and more. The statement embodies concepts that all can embrace — at least, those whose minds haven’t been poisoned by the radical left. Tragically, we are losing these defining features of our democracy. Common...