Cesar Chavez was a civil rights leader who is best known for his work in the 1960s and 1970s to improve the working conditions of migrant farm workers. He co-founded the National Farm Workers Association, which later became the United Farm Workers union. He was an advocate for non-violent protest and organized boycotts, marches, and strikes to bring attention to the plight of migrant workers. He was also a vocal opponent of racism and discrimination. Chavez's legacy continues to inspire people around the world to fight for social justice.