My view on it is people like blaming anyone, or anything, else for their own actions, and violent movies and video games offer the perfect scapegoat because they are accusing an industry, not an individual, and therefore there's no real way to verify or discredit their claims
Parents are the quickest to blame violent media in my opinion, because when their kids mess up or do something wrong then it's not their failure as a parent that contributed to their behavior, it's the fault of a faceless corporation
I enjoy violent video games and films and always have, I've also always enjoyed well made family films and video games like mario and tetris. I'm not a violent person, and simply watching a movie or playing game isn't going to change anyone who wasn't messed up to begin with. And if all it takes to trigger a violent episode in someone is a movie or game, than it was only a matter of time before something that wasn't make-believe had a similar effect
That's just my opinion, of course