While I don't think Democrats or Republicans as a whole are racist, I do think there are racists in their ranks, particularly those in the Democrat party. Do give some examples of the Republicans who you think are racist, or their policies that are racist. I can certainly do the same for the Democrats.
I would start with say, Omar Ilhan and Rashida Talib, both of whom are thoroughly antisemites. Both have repeatedly had to walk back and apologize for their antisemitic remarks.
Maxine Waters is a straight up, out-and-out racist bigot of the worst kind. She's repeatedly and unapologetically made all sorts of racist statements over the years.
There are plenty of others too, but that's at least a sample to start.