Consider the tragedy in Aurora. James Holmes, as far as we know, acted alone and of his own accord. He was not instructed to kill by a higher power or by a religious leader. He seems to have been acting out a scene in a Batman movie with himself playing the Joker. We will likely never know the reason why, armed to the teeth, he opened fire in a theatre and killed a dozen innocent people and wounded 58 more. Besides, what reason could he give that would make us stop and say, “Oh, so that’s why he killed twelve innocent people. Now I get it.”

