The U.S. legislation that aimed at promoting civil rights during the civil rights movement was the Civil Rights Act of 1964. This landmark law made discrimination based on race, color, religion, sex, or national origin illegal in various areas, including public accommodations, schools, and employment. It aimed to end segregation and promote equality by enforcing desegregation. The Act was part of a broader movement to combat racial injustice and laid the foundation for further legislation to enhance civil rights protections.