Daniel J. Berrigan, Defiant Priest Who Preached Pacifism, Dies at 94 – The New York Times
The catalyzing episode occurred on May 17, 1968, six weeks after the murder of the Rev. Dr. Martin Luther King Jr. and the outbreak of new riots in dozens of cities. Nine Catholic activists, led by Daniel and Philip Berrigan, entered a Knights of Columbus building in Catonsville and went up to the second floor, where the local draft board had offices. In front of astonished clerks, they seized hundreds of draft records, carried them down to the parking lot and set them on fire with homemade napalm.