Janel sent me a link to this article The Truth About Violent Youth and Video Games by Duke Ferris.

(emphasis is his)

First off, I have absolute proof that video games are not the cause of this epidemic of youth violence in America. No, really, I do. Ready?

There is no epidemic of youth violence in America.

When those who are championing the cause against video games begin their argument on a false premise, sometimes it's hard to see it and fight them. Obviously there is an epidemic of youth violence in America, we all agree on that... now just to find the culprit. Wait a minute... is there an epidemic? Or are politicians and the media using terrible individual events like Columbine to manufacture a widespread epidemic?

He includes some graphs on crime rates and homocide rates from the Department of Justice.

Something must be missing. That first graph is the overall violent crime rate, and we’re talking about youth violence here. So I found the data sorted by age, and it turns out that through 2002, youth homicide actually dropped across the board, the only increase being among adults. If I may quote directly from the D.O.J. report, “Recently, the offending rates for 14-17 year-olds reached the lowest levels ever recorded.”

The lowest levels ever recorded. In other words, the Playstation era has, in fact, produced the most non-violent kids ever. But I thought video games were training children to kill?

It's a really interesting read, I recommend giving it a look.