although I'll admit it does a very poor job and doesn't really serve as much of a control as it is supposed to.

When you're able to freely walk around a world doing whatever you please blowing stuff up and killing people execution style (a la Grand Theft Auto) or do the same using military weapons in any of the Call of Duty games, that can be a problem in the hands of a mentally ill person who in turn has access to weapons in real life. They have a hard time distinguishing between what is right vs. wrong, and in turn may very well blur the lines between whether they are playing a game vs. acting out the game in real life.

Again, I'm not advocating anything against video games, but you simply can't discount it as part of the problem in the grand scheme of things. I still think the key is the mental health piece. We deinstitutionalized over the past two decades thinking that it was better to integrate the mentally ill back into society and, although it has worked for many people, there are some that are a danger to themselves and others when tossed aside and ignored.