The entire "disturbing video" and the police "who did nothing" are red herrings. The son of a movie producer, one who worked on violent movies, who drove a $50K BMW, and had no obvious mental issues isn't going to be led handcuffed from his apartment for a mental evaluation. In point of fact, it's such benevolent protection that is the subject of another thread, where they feel that the Police's decision was wrong.
In today's world, the culture is much darker than at any time in my life. Heroes are at the least as flawed as the villains, and the media hypes ever more violent, and even blatantly illegal actions, in the entertainment industry.
Then we wonder why young people emulate many of the scenes in these games and movies?
The NRA has nothing to do with this man's problem. Nor have nameless politicians. He couldn't being himself to blame the real villain in this piece, his son.
I wonder if, before he was visited by wanton and senseless violence, he and his ilk had ever raised their voices to protest the criminal violence of less affluent neighborhoods? Or was it always something that "couldn't happen here". Sort of like watching the movies he helped direct?
There are any number of cities near him where such violence wouldn't have attracted much attention beyond the local eleven o'clock news.
California, as was mentioned, has some of the toughest gun laws in the nation. They have that "universal background check". They have a roster of allowable firearms, a magazine capacity limit, laws regarding transporting loaded weapons, even laws about offensive knives. Yet, it matters not to the criminal, or the insane. The first we plea-bargain to freedom, the second we temporarily hospitalize.
Note how the media focuses on his use of a firearm. They pay lip service to the fact that in his spree HALF of his total was with a knife, the last person killed by a gun was the shooter, committing suicide. The rest were injured by the man running them down with his car. Also note that today, in any spree shooting, the death toll always includes the shooters suicide. Great way to spice up the death toll.