Socialist Action (United States) Tags: Political Party.Socialist Action is a Trotskyist political party in the United States. It publishes the monthly Socialist Action newspaper has a youth affiliate called Youth for Socialist Action (YSA) and is associated with the Fourth International. thumbnail formation year 1983-01-01T00:00:00+02:00 ideology Communism international affiliation Fourth International (post-reunification) secretary Jeff_Mackler youth wing Youth_for_Socialist_Action Learn more... Loading...