can vengeance be righteous?

the problem with vengeance is, it seldom has a precise aim. it is seldom driven by a cold mind, by reason; most times, revenge is solely an emotional act, one which makes it all more dangerous. driven by emotions, we tend to forget our goal - and what could be a "righteous vengeance" (if such thing is to exist - you tell me) turns out to become a bomb that we don't care where it will fall and explode. talk about losing focus - that's exactly what happens every time we let ourselves be driven by emotions only. it is irrelevant if in this process we hurt ourselves alone, or eventually, if we hurt the target of our personal vendetta. but if we end up hurting innocent people, people that had anything to do with it at all, then everything is wrong - and whatever reason our vengeance had is lost in the bloodshed.