Stuff like this can occur which is a same and in areas of the world it seems to never end. No matter what though right is right and wrong is wrong and the more people stand by this the more the violence can stop and bring more peace.
I agree with you sir. I am PRO LIFE. I guess you've heard this kind of situations to our fellow Muslim brod and sis. This kind of things is what they believe as reasonable.
It is possible that Mr.Another's Clan will look for revenge but I am damn sure that this is not an equation for multiplication. It would be more like
-Life (+) -Life = -2Life