I just want to say by no means am I condoning their actions. Killing people who with no direct involvement in the conflict is a fucked up thing. It is wrong, no question. It may not be possible to reason with people with such a mentality.
The issue is less of stopping the problem at hand but more of preventing new ones. What's the point of curbing terrorism through brute force methods only to create new ones in the next generation?
@Steve C You're right on those points but perhaps I should clarify more. Of course you can't mourn and stop your life for everything that happens. It wouldn't be possible and frankly, as you said, I'm not going to care for most of them. But to say you can judge and condemn anyone without so much of a thought on who they are and why they did this isn't quite right either.
My intention wasn't to say you can't judge others. If someone kills your child you have every right to. But maybe it's not as shallow and straightforward as someone killing for the sake of killing.
I think a part of having empathy is to look at others as a fellow human. Perhaps it'd be worth your effort in your busy lives to give it some thought--why did he or she do this.
Now I'm not some idealistic shit calling for hand holding and singing kumbahya with a killer. But as long as we judge them at face value we’ll never be rid of events like this. But I suppose as long as it doesn't happen to you, it's not your problem.