Thinking of this thread in that way, would it be okay for someone to have some kind of Anti-Jew movement for Bitcoin on the forums protected by their free speech? Whatever it is people tend to think "free speech" is on a private forum anyways lol.
It depends on who posts it and how well-argued the post is. A topic like that would be a strong indicator that the poster is here just to troll and make the community look bad. The poster would probably be banned, and the topic might be removed. However, all legal discussion is allowed from non-trolls.
Insults also raise a user's "troll score", though they are likewise allowed for non-trolls when on-topic.