Do violent video games actually cause more real life violence?

I don't think that video games cause more real life violence, because I play violent video games and I don't want to hurt people or anything. I don't think that most serial killers even play violent video games. Most serial killers are quiet, and to themselves. They don't spend time on video game systems. Most violent people have a bad past, or they are trying to cover up something else, like pain. I don't think that violent video games cause aggression. I agree with the video. It shows that violence actually does decrease real life violence.