Is Film Violence to Blame for Colorado Shooting?

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In the aftermath of Colorado's senseless shooting, which claimed the lives of 12 people this morning in Aurora, Hollywood is re-examining the real-life impact of violence fictionalized on the big screen. 
A promo trailer for the Ryan Gosling flick Gangster Squad has been pulled from screenings today as the images featured in the teaser (a dramatic in-theater shootout) have become an emotional trigger to the sensitive issue at hand. The preview was reportedly played before The Dark Knight Rises at the very theater that James Holmes, the suspected shooter, allegedly shot or fatally injured 71 people.
While Warner Brothers, the studio responsible for Gangster Squad, was quick to tend to the situation at this painful time, the issue of whether violence in Hollywood films is responsible for inspiring this killer and more, is being hotly debated.
Dr. Gail Saltz, a psychiatrist and contributor to NBC's Today, weighs in on the topic with ET.
"I don't think that we can say Hollywood necessarily plays any role in this," Saltz argues to ET. "It is a sad and rare reality that somebody either suffering with mental illness or just being a lone, disenfranchised angry paranoid person comes to commit an act like this and I don't think that we can say specifically… that any movie was responsible for such a thing."
Watch the video for more.