I get into arguments when I'm pretty sure I have facts and reasoning on my side, but I still try to treat my opponents with a measure of respect. Obvious example: I used to be extremely nationalistic in the sense of "America is right, immigrants are dangerous, and war is just." My views have shifted in large part because others actually challenged my arguments instead of attacking me, forcing me to examine my premises and preconceptions.

In contrast, I was literally just told downvoting vote-farming spam comments was equivalent to rape, arson, and murder. I was somehow guilty of war crimes because I noticed something weird and chose a response they didn't like.