A couple years ago we had a Police Officer killed by a 19 yo local kid, (cousin to skier Bode Miller )
Initial reaction was "Oh, a Police Officer died in the line of duty. What a tragedy." Turns out he was a hardass with teen agers, with several complaints by parents, but would not say spit to an adult, general opinion now is the prick got what he deserved, I always think about incidents like this, even if the shooter was a thieving scumbag chances are, based on averages of people I've known, that some of these "victims" of shootings in general, not specifically this one ) needed killing and we are well rid of them.
May sound crass, but I'm not one who believes that "life is precious", if it was there would not be 3 Billion of us, fact is, we breed like rats.