Watch A Song for Cesar: Beware a Movement That Sings (2021) : Full Movies Free Streaming Online Song for Cesar is a documentary film with a unique view of the life and legacy of Cesar Chavez and the farmworker movement. The film tells a previously untold story about the musicians and artists who dedicated their time, creativity and even reputations to peacefully advance Cesar Chavez's movement to gain equality and justice for America's suffering farmworkers.