Can I also throw into the pot another point of view, which could be that games help release violence, without games you would not be able too. I feel people may forget we are a fighting race, we need to be to survive. I think in general games help certain people to carry out violence that they might otherwise do in real life. I'm sure that has happened someplace, not with kids though, with adults.
Perhaps if Hitler had played doom, there would of been no world war 2