Students for a Democratic Society
Each of the delegates was given a paper saying "You don't need a Weatherman to know which way the wind blows" (a lyric from a Bob Dylan song, "Subterranean Homesick Blues"). This was written by a group who later became called the Weathermen and were involved in more violent protests. They took over by voting out another large group, the convention quickly fell apart, and so did SDS.