I can't understand how it would make anyone "feel better" to ban controversial topics from a forum. If you don't want to have anything to do with a thread, you won't click it, unless you're some type of masochist or something. Which leaves us with the possibility that someone might get "offended" at seeing the thread title itself... to which I suggest that person probably doesn't belong on the internet if he's going to get offended anytime he glances at a few words he doesn't like.
