In the 1960s and '70s, Cesar Chavez and farmworker activists allied with musicians and artists to help build a movement called "La Causa". A Song for Cesar tells the story of that alliance using first-person accounts of artists, musicians, members of Chavez's family, and other key figures of the movement. Inspired by the spirit of the thousands of farmworkers who struggled for justice alongside labor leaders Cesar Chavez, Dolores Huerta, and Larry...