The National Rifle Association has said that guns don't kill people, video games do.
http://www.theregister.co.uk/2013/01...ease_game_app/
Now, while I do think that Video games can have an impact of the level of violent crime in society, I can't help thinking the NRA has missed the point. People can become as violent as they want, but if they don't have ready access to assault weapons (or guns in general), it's a little more difficult for them to run amok killing innocent civillians.
It's a lot easier to stand there and shoot several people than it is to run around and knife them.