I'd rather hear you engage in the debate (I'd definitely be on your side in opposing racism) than simply to ban some topics from being discussed at all. The top

I'd rather hear you engage in the debate (I'd definitely be on your side in opposing racism) than simply to ban some topics from being discussed at all. The topics will still be discussed, but only in underground cells of fanatics who will not then hear opposing points of view. I happen to strenuously disagree with communism (perhaps because I have been studying Chinese since the Cultural Revolution, and Russian even earlier, so I have read a lot of communist literature over the decades) but I would try to be respectful and hear you out if you desired to convince me that my point of view is wrong and yours is correct. Hacker News isn't exactly the place for a debate about the rights and wrongs of communism, but I think the key principle is that everything has to open for discussion in a public place where adults can join in to debate differing points of view.