Thanks to GamePolitics.com:
It verifies what many gamers, including myself, have been trying to tell everyone else all along: that violent video games do not make people violent. If they do, the person who is committing the act of violence already has serious anger issues. Look at the sales of games like GTA and Halo. If violent video games had an effect of making normal people violent, we'd be seeing violent shootings on the news everyday by psychopath gamers. But you don't. So, 'nuff said. Now, excuse me while I engage in mass murder in GTA: San Andreas.