After the Days of Rage riots the Weatherman held the last of its National Council meetings from December 26 to December 31, 1969 in Flint, Michigan. The meeting, dubbed the "War Council" by the 300 people who attended, adopted Jacobs' call for violent revolution. Dohrn opened the conference by telling the delegates they needed to stop being afraid and begin the "armed struggle." Over the next five days, the participants met in informal groups to discuss what "going underground" meant, how best to organize collectives, and justifications for violence. In the evening, the groups reconvened for a mass "wargasm"—practicing karate, engaging in physical exercise, singing songs, and listening to speeches.