The Civil Rights Act of 1964 made discrimination based on race, color, religion, sex or national origin illegal. It led to some desegregation of schools and public facilities in the South. However, violence and unrest continued, such as the 1964 murders of three civil rights workers - Michael Schwerner, Andrew Goodman and James Chaney - by the KKK in Mississippi. Their deaths highlighted ongoing racial tensions and the need for further progress on civil rights.