After the violence in Newtown ó and really, any violent mass shooting these days ó it didnít take long before pundits were blaming violent video games for the violence. As happened with comic books in the 1950s, video games have become a scapegoat for deeper societal problems.

Senator Jay Rockefeller proposed a bill mandating that the National Academy of Sciences research the effect of violent media on children, and President Obama himself asked the Centers for Disease Control and Prevention to investigate the relationship between violent media and actual violence to the tune of $10 million dollars in taxpayer money. These calls for more research come despite the fact that previous studies do not support the existence of a strong link between violent media and violent behavior.
http://cbldf.org/2013/01/kotaku-take...t-video-games/

Excellent read. For those who don't have the patience to read a long article, it pretty much shows that competition, not video games, leads to violence...