On the night of Thursday, Nov. 13, 1969, the “March Against Death” began. By the time that weekend was over, Washington, D.C., had seen more protesters than any single event in its history had drawn. Attendance was higher, by tens of thousands, than at the 1963 Civil Rights March on Washington. And despite a name that, 45 years later, may seem overblown or vague, the march was actually about something very specific.