inb4 "if they had guns this would have never happened, america needs more guns!" Though, let's be serious: This is tragic that someone decided to just kill someone. For all we know, this could be politically motivated, or maybe the person is mentally ill. Some people aren't that big of a psychopath in real life to just wake up and say, "Well, today is a good day to go on a murdering spree!" We'll just have to wait until more details come up from this.