Guns don't kill people. The beliefs of a person or social group in which they have an emotional investment kill people.

Ari Fleischer was asked why the President doesn't support a national ballistic fingerprinting system given, you know, certain media-hyped gun violence in the DC region. His response:

"And certainly, in the case of the sniper, the real issue is values. And that's what is at stake here. The real issue is values. These are the acts of a depraved killer, who has broken and will continue to break laws. And so the question is not new laws; the question is the actions here represent the values in our society."

See, it's that whole culture of death we've got going on that's to blame. If only we didn't have abortion and violent video games this never would have happened (NB: the death penality is not, despite appearances, part of the culture of death).