What violent video games did Hitler play? What about Charles Manson, what violent video games did he play?
If you are a good parent that builds a strong relationship with your children, then its not like your kid is going to play Call of Duty one morning then just up and then go on a killing rampage. In Canada and western Europe kids play the same games, yet their murder rates there are a fraction of what ours is.
The problem we have in this country is that as a society we are more selfish and materialistic than ever, and as a result, we have a lot of ****y parents. Anymore, "enrichment" for many kids consists of soccer practice. Other than that, their parents don't do anything with them, they don't build the respect and friendship with their kids that previous generations used to build with their kids. Our son at the age of eight has been on several backpacking and canoe trips, been fishing God knows how many times, has been to art museums, museums of natural history, has traveled with us, has been exposed to no telling how many different cultures.... Our daughter in the year and a half we have had her has done more with us than many of her friends in Kindergarten have in their entire lives with their parents. Most of our son's friends went fishing for the first time last fall in cub scouts at one of the pack meetings, many of them have never been camping, been to museums, been exposed to different cultures, taken with their parents on trips, and so on. When did we forget in this country that your kids are the best friends you will ever have? Its the self absorption in our society that has lead to this.