I think you guys try, but like you said above somewhere. It's a polar world and people are all in on their side. So even trivial small banter (not only politics) takes on a life of its own and someone (left, right, conservative, liberal, young, old, straight, gay) always has to be a dick about it. Usually, right after the disagreement starts, the lances come out and its full charge. You guys do your best trying to clean it up and mitigate, but then the culprits follow posters around and just holds a grudge and pepper them with bullshit. I get we are all assholes with thick skins, but it always leads to resentment and bitter pissing matches that drag others in and down. Be an asshole, but don't be a dick. Be funny, not spiteful.
Thats my biggest and probably only bitch about this place and I think it leads to less traffic and communication and more apathy. I wish I could help find a way to minimize the crap because I really enjoy this place.