The Situationist International (SI) was a small group of international political and artistic
agitators with roots in
Marxism,
Lettrism and the early 20th century European artistic and political
avant-gardes. Formed in 1957, the SI was active in Europe through the 1960s and aspired to major social and political transformations. In the 1960s it split into a number of different groups, including the Situationist Bauhaus, the Antinational and the
Second Situationist International. The first SI disbanded in 1972.
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