Sometimes you have to stand and fight. This from someone who leans towards pacifism: "someone opposed to violence as a means of settling disputes."
If you always pick fights, you are an asshole.
If you always pick fights that you know you will win, you are a bully.
If you always pick fights that you know you will lose, you are a masochist.
If you try to avoid, evade, defuse, deflect, escape, deflate in the face of a fight, but find yourself in one anyway, well, then what?
If you stand down, are you a weasel? A coward?
Sometimes you can't back down. You just can't. Reasonable, or not. This from someone who has been pounded into the ground a few times.
Sometimes you have to stand and fight. You have to stand and fight.