Well, it's Dems who have been the more racist party, both historically (1860 1910 1960) and today. But then, both of your parties are very very similar. They do have some disagreements on social issues, and they fight violently _which_ of their donors deserves more of public money, but their core platforms are pretty much the same: insane corporatism.
It's kind of like claiming that brown socialism and red socialism are opposites when they're factions of the same side.
Compare with eg. the country that I just received another lecture to not call them "Russia" -- which went from communism to fascism without any change to internal policies.