Now this is where I sound ultra conservative....
I'd say this shooting, like the shootings in Colorado and Oregon are "exceptions" in otherwise peaceful suburban environments where law, order, and civility tend to be the rule.
As much as they seem to be occuring lately, they're still relatively isolated as compared to the warfare seen in some of the ghettoes of America where children seem to be shot and killed on a daily basis.
People are scratching their heads trying to figure out what made this seemingly peaceful quiet kid snap. They're saying most likely it's a mixture of mental illness and the availability of guns. But in the ghetto, people KNOW why so many children are getting killed (lawlessness, declining morals, broken families, lack of decent employment) but few....including the police...seem to be concerned enough to impliment the massive changes needed to resolve the problem. If anyone doubts what I'm saying.....find an average group of Black men and try to sit them down for 5 minutes to talk about the problems afflicting the "hood" and what we can do about it.
Wealthy White people would re-write the constitutions or dismantle the government all together if their children were getting slaughtered across the nation by gang and drug violence the way so many Black and Brown children have been.
It's sad to say, but I've came to the conclusion that many of our people simply don't care as much. Too many are so concerned about their own personal situations that they can't look beyond their noses to see the greater problems afflicting the community as a whole.