We are one month into the school year and already there have been dozens of gun-related incidents—mostly minor, some not—at American schools. Yesterday, a high schooler in Arlington, Texas, shot a teacher and two other students following a fistfight; children hiding in their classrooms sent terrified text messages to their parents. Last Thursday, the same day that one 13-year-old shot another 13-year-old in the hallway of their school in Memphis, Tennessee, a 6-year-old was shot in the leg outside his school in Newton, Mississippi. School lockdown drills to train for active-shooter situations have become a fact of life across the country.
