Whether forums, private message, or comments, bullying folks should not be permitted. Drama and politics are a whole different ball game which if it's in the forums I have no authority.
Nor should I necessarily get involved (unless the situation warrants it). I'm not saying it is taking place, but if bullying is taking place in the forums, it gets reported, it is proven that they were posting in a very negative way, should nothing be done? Not even a little note saying "Ease up there buddy" in private to that individual? People have left SP due to intense bullies. It's not common from my understanding, but it shouldn't be taken so lightly either. I'm not someone who wants to trample on people's freedom. But freedom can be used in a very negative way that has serious repercussions. Whether we like to admit it or not. Whether an admin does nothing or something. When folks are scared off the site, that's when it compromises "a part of SP".