In the civil war in El Salvador, my parents would often hear gunshots, sirens, and bombs going off all night and see dead bodies on the side of the road the next day. One night, my father had a gun pointed to his head by the military when he walked home after curfew. And a lot of people just ‘disappeared’ forever, including my aunt, who was a union member at the factory she worked at. But one of the things that most worried my parents was that children walking home from school could be picked up by either the . . .