How about we don't guess what others may see Bill.   You had a good idea, we should all look at the roots of OUR anger and maybe ask what we have in common with these people that lose control and murder.     

We try to make them into beast, or posessed by the Devil.   We are afraid to see that person as our brother, sister, mother, father, ... as ourself.    We are all human beings capable of miracles and creating murderous tragedies.    It scares us to admit -  if not for the grace of God, we might have had become that person.

Time to look inside.