You don't hear the democrats touting this fact:
'Civil Rights Act took bipartisanship as well, thanks to fierce opposition from Southern Democrats. Republicans of that era are often portrayed as opponents of civil rights. In fact, a higher percentage of Republicans than Democrats voted for the 1964 bill. And when it finally passed, GOP Senator Everett Dirksen, the minority leader who worked closely with the bill's sponsor, Democrat Hubert Humphrey, was honored for his efforts with a NAACP civil rights award.' - Jan 15, 2008 WSJ 'Politics of Pigmentation'