I attended a private (nominally Christian) liberal arts college and I find that I do agree with you on the suppression of discussion that many people found disagreeable. That's a legitimate problem.

I was a member of a free thinkers group there and we were derided for being open atheists/antitheists on an "inclusive" campus. I think there should be places for open discussion that makes us uncomfortable especially on college campuses.

And while I do find demonizing people and shutting the door to conversation to be morally reprehensible, I find demonizing people and basing policy on such demonization to be worse.

I too hope that we can have conversations about controversial ideas (I hold many of them myself), but I don't think saying eliminating safe spaces is a way to accomplish that.