I blame a lot of it on "our" news system and TV Think about it this is an "copycat" type thing and the reason I say there is much to blame not all of it however a good deal on the News system is how they sensationalize the bad things and a major amount of the news is negative that along with the hugh amount of violent programming in the movies and on TV we see that you must realize that a person that is in the 30s (like me) that is the major thing we have seen on TV and in the Movies for almost our entire life has been violent programming. By no means am I defending this *!#%$##e however I am saying people are becoming less sensitive to crazzy acts since it is the "norm" in movies and in Kids shows along with what many say is the most depressing time of the year for many. So theses off balance persons just snap. You can guard the schools better but thats just a "patch" for the real problem.