Were there any Judges involved?
There is an element of society that just never seems to figure out where they fit in and seem to lack a feeling of acceptance. From my perspective those individuals sometimes just never find satisfaction in life and eventually go over the edge and want to take as many with them as they can. If they can make people remember them..well that may provide motivation.
I have often wondered if any of these people who carry out these evil attacks are under any form of chemical courage beforehand.
How long has this been the case, and is it unique to the United States?