I love the idea of the 70-odd Jewish men, though my brain likes to play with words, so I keep reading it as "70, odd, Jewish, men' which brings up some interesting images.'
I don't think murder, in any circumstance, is justified. As Michel so well put it (and I've been mentally putting it for awhile) it is better to let all the murderers in the world live than to kill one innocent person. (I'm not saying they should run free, as I also believe that life in prison is worse than death, but it's also much easier to let a person go home if they're proven innocent than to try to find a 'reset' button on the metaphorical electric chair.)
This is also one of those things where I should note that I'm not saying, if I were in a victim's family's situation, I wouldn't want to have the person who took my beloved one away from me killed, but that's one of the reasons I would prefer that the option wasn't in my or anyone else's hands. I know I'm a bit self-centered, but I wouldn't want to look back on that in regret.
One of the most beautiful speakers I've ever been able to listen to was when the mother of Matthew Sheppard spoke at our local community college. She spoke about forgiveness for the two people who had murdered her son, and I don't think I've ever been as moved.