Seriously... I was played M rated games long before I should have (I believe Resident Evil 2 came out when I was like.. 12), but I've never even hit a person before. Well, I did once, but it was an ex-boyfriend that I caught cheating on me with my ex-best friend, he got a punch in the nads, but the video games had nothing to do with it. Some people are born without a conscience, and with or without video games, they will be criminals. I've never enjoyed the GTA series, but one of my favourite games of all time was Goldeneye for the 64, and I played that with my parents.
Parents need to take a more active role in what their children are watching/playing/reading/looking at on the internet. I see far too many kids in my niece's generation (early-to-mid 90s) with absolutely no rules or boundaries whatsoever. I had a curfew, I was only allowed to watch "grown-up" movies if my mom deemed them appropriate, and even then she'd watch with me and explain things to me throughout. I was instilled with a strong sense of right and wrong, but so many kids nowadays... I mean, when there are 13 year olds having sex, there's obviously something wrong.
I'm sick to death of video games being the scapegoat for every shooting that goes on which involves teenagers. Gaming is no longer something only nerds do, it's as wide-spread as playing football, so people can't really be shocked that these kids who commit crimes are playing video games. Everyone plays video games. My mom plays video games. The Jamaican down the street plays video games. They really need to start blaming themselves, and not the media.