Weather Underground

The Weather Underground Organization (WUO), commonly known as the Weather Underground, was an American radical left-wing organization founded on the Ann Arbor campus of the University of Michigan. Originally called Weatherman, the group became known colloquially as the Weathermen. Weatherman organized in 1969 as a faction of Students for a Democratic Society (SDS) composed for the most part of the national office leadership of SDS and their supporters. Their goal was to create a clandestine revolutionary party for the overthrow of the U.S. government.