The far right: The democrats are racist. They started the civil war over slaves.
The far left: The republicans are racist. Their voter base is along states that more or less broke away from the Union.
Me: Neither party is racist. 1928 United States presidential election results map by county - 1928 United States presidential election - Wikipedia is an election map from 1928 and 2020 Presidential Election by County - 2020 United States presidential election - Wikipedia is a county by county map of 2020.
Pretty much everyone agrees that in 1928, the democrats were the more racist party. In terms of 2020 though, there is a huge amount of overlap between red counties in 1928 and red counties in 2020, between red counties in 1928 and blue counties in 2020, blue counties in 1928 and red counties in 2020, between blue counties in 1928 and blue counties in 2020.
NYC in 1928 voted with the rural south. For one to believe that the democrats were racist in 1928 means they would have to believe NYC was racist in 1928. Now the rural south and NYC are about as different politically as it gets. On the flip side, urban California, especially Los Angelos, voted the same way as rural Oklahoma and Wyoming. In 2020, over a dozen states that voted for the republican party voted republican in 1928. On the flip side, Virginia and Georgia are 2 former confederate states (and Maryland and Delaware were slave states at the time of the civil war), Virginia is a blue state and Georgia is a purple state. Florida was historically purple until DeSantis made it red.
What I'm trying to get at is there is not much of a strong correlation between whether a place was racist in 1928 and if it's democrat or republican in 2020. If politicians don't want to be viewed as racist and if the south is still racist today, Democrats aren't going to want Warnock to win in Georgia because if Warnock wins in Georgia, then democrats have 1 more senator on their team that was from a state that was pro confederacy and they have a racist state backing them (if Georgia is indeed racist which the state isn't).
It's no longer a north south divide that separates American politics and segregation doesn't play a big part in politics anymore, so both sides shouldn't be accusing the other of racism. It's an urban rural divide. Rural NY in 1928 and 2020 voted for republicans. Urban NY in 1928 and 2020 voted for democrats. Nobody in power considers NY a racist place. The former confederacy used to side with NYC. Now they side with Upstate NY.