Workers World Party is a revolutionary Marxist-Leninist party. It was founded in 1959 as a split from the Socialist Workers Party. The main reasons for the split were acknowledgement of the Chinese Revolution as a Socialist Revolution, support for the suppression of the counter-revolutionary hungarian uprising, and opposition to the use of federal troops to intervene in the civil rights struggles. Sam Marcy was the ideological leader, who led the Global Class War Tendency within the SWP prior to the split. Vince Copeland, Larry Holmes, Monica Moorehead, and Leslie Feinberg are other prominent members of this party.
The party flows from the Trotskyist tradition of the SWP, however it does not practice the "vulgar anti-stalinism" common is most trotskyist groups. Workers World has a policy of never attacking "worker's states" in its publications.