No one knows right now why the young man decided to shoot up the movie theatre. Of course, he had to be somewhat crazy to do that.

However, he had bought all the guns and ammunition legally according to the police chief. He did not have any criminal or mental issue to deter him from buying the guns or ammo.

The problem is the easy access to buying guns. There also is no reason for a civilian to own an assault rifle like a M-16 that can be converted to full auto very easily. The NRA would probably be in favor of any citizen being able to own .50 caliber machine guns with the arguement that citizens should be armed just like the military in case of the "rogue" government comes marching down Buena Vista Blvd.