Should American universities call the cops on protesting students?

As a practical question, dealing with these protests is hard. As an intellectual question, the sort debated on college campuses, it really is not. And yet clever people are tying themselves in knots over the rights and wrongs of what is going on. To the right are politicians who have spent years denouncing elite universities for being full of snowflakes who cannot bear exposure to different opinions, and are now trying to stretch the definition of antisemitism to silence views they disagree with, preferably with the help of the National Guard. To the left are students, faculty and administrators who have embraced the idea that objectionable speech is the same as violence, and are now arguing that it is fine for people to wave banners that call for actual violence (for example, “Globalise the intifada!”).