Gunman kills at least 12 in movie theater at "The Dark Knight Rises" screening in Aurora, Colorado

I'm actually surprised this hasn't been discussed yet. I wasn't at a midnight showing, but this news is just debilitating, to think that someone would be willing to carry out such monstrosity.

But what really gave me the gumption to post about it was a Facebook friend of mine, a man I usually have the highest regard for, who posted this:

Regarding the horrible shooting at the Aurora Co. movie theater last night - I'm going on record as saying that I think this new style of purposeless, random, spectacular murder is somehow tied to the emergence and acceptance of video games that feature the same sort of violence. Have you seen some of the video games that feature the ability to randomly shoot anybody that your character encounters? You know, even I got a little excited when video games like Medal of Honor came out some years back. Amazing technology. But the mission of those games seemed reasonable enough, or at least framed the process of shooting another character within a psychology that we can understand. Your character is typically on the ground as an infantryman in a war. There's the enemy. Shoot them to survive and win. It's an ageless scenario of war. But good grief, some of the games now where your gun wielding character is wandering the streets shooting cops, pedestrians, and anyone else that may come along must certainly desensitize our youth to the value and preciousness of any and all human life.
Maybe, as a gamer, I am taking this a bit close to heart, but that just hurts. And it makes as much sense to me as if we were to say he was left-handed or played tennis, and that those things caused a dozen people to lose their lives instead of the choices of a single individual.

I suppose I need to direct this topic somewhere. If you have more up-to-date sources, please share them. What reactions do you have? What reactions have you seen in your social circles that strengthened or weakened your faith in humanity? Discuss, please.