You're absolutely right, everything's so civil here that the moment someone is remotely hostile to anyone it stands out like a sore thumb. Reddit was hell in some places in this regard, one word against the general consensus and everyone piles on you like you're a terrorist.
And that's without mentioning people who are there clearly just to stir up arguments, I don't know how so many people don't realize this. The "old" saying "don't feed the troll" has been forgotten by a big portion of the internauts.