Socialists like to frame everything as a class war, but reality is not so black and white. Rich people aren't a monolith and this was especially not the case with civil rights. The American elite were thoroughly embarrassed by their European counterparts laughing at their countrymen being so boorish as to lynch people for the color of their skin. Civil Rights came from the top down just as much, if not more, than it came from the bottom up. Without the Supreme Court that gave us Brown v Board and LBJ's warm reception of the NAACP, we would not have Civil Rights as we know it. At best, we'd get half measures that the kind we got under Reconstruction.