There is no rise in violence. The only notable rise in violence is in Africa, and of course they are famous for being avid video game players.
People have always been violent, it's just that the media reports about more, and more these days. My grandparents tell me about 1950's London, how it was more dangerous to live there than Kabul today. And video games weren't even invented. But nobody knew about the amount of gang crime, murder, rape, and general anti-social behavior in 1950's London, because nobody wanted to know about that stuff. They wanted to know the good things, and only the good things.
I think in the time we live in, violence in first world countries is slightly less so than a hundred years ago. We've come along way, and of course there is still a lot of violence, but it's not video games... not at all.
And protip: Violent people like violence. Games offer that in ample supply, logic = cooltimes.
