Community Service Organization

Community Service Organization
AbbreviationCSO
Founded1947
FounderFred Ross Sr.; Edward Roybal; Antonio Ríos
TypeGrassroots civil rights organization
HeadquartersBoyle Heights, Los Angeles, California, U.S.
Region served
Mexican American communities in California (later expanded)
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César Chávez at a United Farm Workers rally in Delano, 1974

The Community Service Organization (founded 1947) is a California Latino civil rights organization, most famous for training Cesar Chavez and Dolores Huerta.