I hear what you are saying ... however, I was beat up and picked on regularly (I was one of maybe 8 white kids in a predominantly black/hispanic school system) from 1st grade till 8th grade. Then I went to Catholic high school with all the "upper class white kids"... surprize, surprize they were even meaner and nastier than the "underpriviliged minority kids" because I looked "too ethnic" and was poor and well, sadly THE "WRONG RELIGION". Sheesh it seems that I just couldn't buy a break growing up. LOL
The point I am trying to make is that regardless of how many kids were cruel to this one kid, going to school and blowing ANYONE away is not justified.
The thought of my coming to school with a weapon and physically maming anyone NEVER CROSSED MY MIND. Hell, the lesson life taught me is to judge people by the content of their character and not by their skin color, religion, social status, etc...
You can give several people the same stimuli and yet have each react differently.
I think that too much sex and violence on TV in media in general, not enough parental interaction, internet access without guidance, and just a general non-chalant/non-caring attitude towards our youth and elderly citizens is more to blame for these types of tragedies than the fact that A LOT of kids can be straight up nasty.... and while ALL will grow up only SOME will mature.
There are many countries where kids pick on one another, yet NEVER do you hear of such an event occuring, except for here in the good old United States.
Should be a wakeup call to the country.... no?