Why can't people just come out and say that they just wanted to kill somebody? If I ever kill someone I wouldn't tell the police that it was because the music I listened to that made me want to murder someone. Why don't these shooters ever justify their kills with the real reason they did it? When you go into the military one of the questions they as is are you are willing to kill another human being. The same go's for professions such as the FBI, law enforcement, jurors who deliberate on death penalty cases. Some people are just capable of and have no problem with committing murder. There doesn't always need to be an influence, some people are just hardwired to do so.