IF we accept that the killing of another human is the act of an unbalanced mind then any killing is the act of an unhinged person. However, we can see so many holes in that premise they're not worth mentioning.

I suggest instead that we have glorified murder (whatever its 'degree') with terms like terrorism so much that it appears to be a logical endeavor excused by the perpetrators as acts which in and of themselves have a rational origin. We commit murder for king and country, for philosophical notions like religion or nationalism, for our race or ethnic brothers and sisters, and myriad other things that make it ok in the eyes of like-minded individuals and of course ourselves as individuals.

The latest slaughter was made much easier because the murderer had access to a gun. Perhaps he would have used a Molotov cocktail had a gun not been available. But then, maybe that would have been too much trouble and he'd have stayed in his room.

BTW, I agree completely with Stu's posts to this thread.