I'm gonna reply to this here since I imagine gimme might lose it if we continue this discussion in that thread lol:
I don't mean to legitimize their beliefs/positions/whatever, it's just that squashing them seems to tend to yield the opposite of the desired effect. Their thought process isn't "Oh, maybe there was something wrong with what I said or did, and should think long and hard about my beliefs associated with that", it's more along the lines of "Ha! Those dirty liberals can't handle THE TRUTH and have to resort to bans or [insert some other thing here] to protect their evil little bubbles!" It just reinforces the idea to themselves that they're right really. And the more ardently one believes in these things, the harder it is to eliminate these things from society.