All the recent school shooters shared exactly one trait: 100 percent male. (Since the study a few have been female.) Aside from personal experience, no other characteristic hit 50 percent, not even close. “There is no accurate or useful ‘profile’ of attackers,” the Secret Service said. Attackers came from all ethnic, economic, and social classes. The bulk came from solid two-parent homes. Most had no criminal record or history of violence.
