“I had to understand how my son could do such a thing. I had to make some kind of sense of it so I could live with myself.” When your child commits a school shooting, who do you turn to in order to try to understand the situation. Many parents of shooters, parents of victims, and law enforcement officials turn to Peter Langman. He’s been studying school shootings for more than a decade. From WaPo: The twisted minds of school shooters, and the anguished man who studies them.