Why be violent?
There is a phrase in my language. It says, "Your hands should remain clean".
In other words if someone has done something to so degrade themselves as to plummet to the grade of excrement, why would you WANT to touch them? Dont know about you folks, but I avoid stepping on shit with my feet. Why would I want it on my hands?
PS - if it is one of those... "the marriage was over long ago" situations... then that other person REALLY did the both of you a favor. Now there is no more ignoring a situation that should have been dealt with long ago.