I could be wrong, of course... But my impression of the dark clan is that they are playful bullies, attacking unexpectedly on those who are smaller or weaker. In my years of playing, I've always looked for only worthy targets. I was not ashamed to lose and pleased to win.
Everyone has their own choice!
P. S.
By the way I do not see the mark of the dark clan on the server, it's a little funny)