There are two perspectives on this.

When you first start getting redpilled, you point out to the hypocrisy of the democrats. Then you start by saying that ACTUALLY the republicans are very good to Blacks and that the democrats are the real racists. This is obviously futile.

The second perspective is that yes, the democrats are anti white racists.

You can then argue over the use of the word "racist" because racist is a slur meant for white people, hence it is better to simply call them anti white