Sixth-grade students at Eastern Wayne Middle School in North Carolina unknowingly took part in a horrifying “enrichment” lesson involving a fake masked gunman last Friday. As students sat in class, someone in a mask reportedly rushed into the room and pretended to rob them with a fake pistol. The students were not aware of the exercise ahead of time. When angry parents predictably complained, the school sent a letter explaining why the “exercise” was conducted: “As part of an enrichment lesson on exhibiting good citizenship and observing your surroundings, another staff member entered the sixth grade classrooms and pretends to...