The Jim Crow laws made segregation illegal.
The Civil Rights Act of 1964 is a landmark civil rights and US labor law in the United States that outlaws discrimination based on race , color , religion , sex , or national origin . Jim Crow laws . Generally , the remaining Jim Crow laws were overruled by the Civil Rights Act of 1964 and the Voting Rights Act of 1965 , but years of action and court challenges have been needed to unravel the many means of institutional discrimination .