"The liberal media" Ok O'rielly. When ever people dive straight for "The conservative media" or "the liberal media" you know their argument is pretty shit.
He didn't argue whatsoever. He simply stated a fact, and he is correct. Referring to "liberal media" isn't that striking since both liberal and conservative media companies will and do say pretty much anything they can to rile people up. It's not a finger pointing, it's just what happens (much like far right media will certainly go to tremendous links to act like this has nothing to do with guns in the slightest).
I just watched a video, and he's definitely using an automatic weapon with a very high cap magazine. That's literally never happened before, at least not in America. They are not legal to purchase or create for good reason. This will certainly distract from the bigger issue:
Around the world, mass murder of civilians enjoying themselves in highly developed countries is becoming more and more common. Weapons used include explosives, large trucks, and guns. Some are related to organized extremist groups like ISIS and some are not. This home grown nonsense concerns me the most. The Facebook age is making people freaking crazy. How do we do better, one person at a time?