Your teenage son is walking through his Arizona neighborhood, on a sidewalk perhaps 50 feet from the fence that separates us from Mexico. He is visiting his brother at work. Some kids begin throwing rocks across the fence at Mexican border guards. Your son tries to evade the confrontation.
The Mexican border guards respond with gunfire, shooting through the fence to the U.S. side. Your son is killed, shot 10 times in the back and head. Everyone else runs safely away. Witnesses say your son was not involved.