Leftists from very cold, very white northern states have the oddest opinions regarding race, it’s as if it’s all an abstraction to them and they blurt out the most amazingly naive things that would be regarded as quite racist coming from anyone else.
Slavery was. It just was. There is a destructive legacy, yes. However, try to envision an alternate history without it. What would be missing as a result of there being no descendants of African slaves? Music in this country would be bereft. Food. Dance. Sports.
You takes the good with the bad. And, as bad as chattel slavery could be, there were worse fates, such as being left in Africa. There would be no such posterity for these individuals had they not been brought here by force.
God works in strange ways.
Gain a restaurant, lose a country.
Without slavery America would still exist instead of starting a long death with the 1965 immigration Act being the final nail in the coffin.