It might seem right to kill when you're annoyed, but what really ticks me off is when people wipe out complete parties just because ONE person in that party ticks them off.
I've been on both sides before - watching a party mate trying to kill another party and trying to urge him not to, and getting killed by another party.
Really, I don't understand people that have no brains and just run about and kill everyone in sight because someone annoyed them. I'm going to contradict what T6 and viasta says because I hate, hate it when people who don't deserve it get killed. Why the hell are you taking all that effort to kill someone's party mates when they obviously have not supported your attacker and has stood by? You're wasting your time, scrolls perhaps, and a dayyum chance to have fun. Chances are, if you feel annoyed about an attacker and the rest of the attacker's party is standing by, we don't want him/her as well.
There's my little rant on complete wipeout of a party when one person has done something wrong.