Little known is the fact that it was Republican Senator Everett Dirksen from Illinois, not Democrat President Lyndon Johnson, who pushed through the landmark 1964 Civil Rights Act. In fact, Dirksen was instrumental in the passage of civil rights legislation in 1957, 1960, 1964, 1965 and 1968. Dr. Martin Luther King, Jr. hailed Senator Dirksen’s “able and courageous Leadership”, and "The Chicago Defender”, the largest black-owned daily at that time, praised Senator Dirksen “for the grand manner of his generalship behind the passage of the best civil rights measures that have ever been enacted into law since Reconstruction”.
The chief opponents of the 1964 Civil Rights Act were Democrat Senators Sam Ervin, Albert Gore, Sr. and Robert Byrd, a former official in the Ku Klux Klan who is still in Congress. None of these racist Democrats became Republicans.