How many slaves did the Founding Fathers have ?
A lot.
The curious issue is the notion of racism. Humans seem to become bigoted easily in many directions, sex, skin color, religion, nationality, ethnicity... Slavery still goes on in many countries and often has more basis in economics than in racism per se.
Haley's dance is sickening historical revisionism in service to dog-whistle lying. She is just pandering to weak-minded bigots. That extreme perversity shows how deeply degraded the US has become. A lot of that is Putin's influence but plenty is home-grown.