The New Left, a radical political movement, began in the early 1960s and was embodied by anti-capitalist and anti-war groups such as Students for a Democratic Society. The manifesto of Students for a Democratic Society, the Port Huron Statement, was a platform of the New Left and called for “participatory democracy” and “revolutionary leadership.”
Students for a Democratic Society (SDS) was founded in 1959 as a civil rights organization. The organization issued its manifesto, the Port Huron Statement, in 1962, and the group soon began protesting the draft and American involvement in the Vietnam War. In the late 1960s, several splinter groups formed from the SDS, including the Weathermen or Weather Underground, a militant activist group that employed violent and terrorist tactics.
The Weathermen, or Weather Underground, was a radical faction of Students for a Democratic Society (SDS), a student anti-war organization of the New Left. The Weathermen broke off from SDS in 1969, employing increasingly radical and violent tactics in its activities. In 1969, the group staged its “Days of Rage” riot in Chicago, followed by the bombings of government buildings in the 1970s.