It did. I remember that there were plenty of studies, however, the collective conclusive has always been negative on the correlation. I even recently saw a museum event on the subject, which draw some strong parallels between current debate about violent video games and the old debate about violent movies.

Personally, I believe there is enough evidence that show that children and young adults that is under major stress and unhealthy social environment will sometimes lash out at society, and they will pick what ever method that is socially unaccepted to do so. Society as such can effect that, but censorship generally has the opposite of the desired effect.

Wouldn't bet on that happening because of Darkwing Duck though.