Final answer:
Sam Cooke was a gifted musician involved in the civil rights movement of the 1960s alongside figures like King and Cesar Chavez. His music addressed themes of racial justice, and he inspired activists, contributing to the larger civil rights dialogue. Chavez, equally influential, successfully organized farm workers and led a significant grape boycott campaign for better pay and working conditions.
Step-by-step explanation:
A gifted musician heavily involved in the 1960s civil rights movement with King and Cesar Chavez was Sam Cooke, who was known as the "King of Soul." Sam Cooke brought his influence to bear on the civil rights movement by thematically incorporating issues of oppression and the demand for racial equality into his music. This was particularly evident in the songs of his initial band, the Soul Stirrers, which aimed to inspire the listener to partake in the movement for racial justice.
Cesar Chavez, a prominent figure in advocating for the rights of Latino/Latina migrant workers, believed in the power of union activism to bring about change. His work, alongside Dolores Huerta, led to the founding of the National Farm Workers Association (NFWA), which played a pivotal role in organizing farm workers. Chavez's approach was much inspired by the civil rights strategies used by the African American movement, which included marches and the famous grape boycott that prompted national attention towards the cause. The 1965 strike that Chavez supported drew attention to the harsh conditions faced by Filipino grape pickers and later led to the birth of the United Farm Workers when the NFWA joined forces with the workers' organizations.