http://www.news.uiuc.edu/news/05/0809videogames.html
http://www.gamesindustry.biz/article...ence-says-bbfc
http://www.news.com.au/couriermail/s...016679,00.html
http://www.guardian.co.uk/technology.../21/news.games
That was just from a quick Google search, there are plenty more. They also suggest that the only cases where there is a weak link between video games and violence, it is possibly a person's violent behaviour that draws them towards violent video games, not the other way around. Or perhaps they are both results of a completely different factor we aren't considering.