Anarchism was a 19th c. socialist movement, and anarcho-communism was one of its main strains, if not the biggest. Given its origins, it shouldn't be a surprise

Anarchism was a 19th c. socialist movement, and anarcho-communism was one of its main strains, if not the biggest. Given its origins, it shouldn't be a surprise that anarchism is collectivist. Anarcho-communism is contrasted by anarcho-syndicalism, which argued for unions/industries being the organizing principle rather than communes/towns.