Controversial topics are allowed, they have to be the correct controversial topics. There was this recent doozey https://news.ycombinator.com/item?id=34707305

Controversial topics are allowed, they have to be the correct controversial topics. There was this recent doozey https://news.ycombinator.com/item?id=34707305 https://news.ycombinator.com/item?id=34707305