White supremacy is not preventing African Americans from achieving racial equality in the 21st century. Black culture is.
Each year, thanks to unaddressed cultural pathologies, black men and women commit violent crimes and have children out of wedlock at rates that are substantially higher than every other racial group. And, each year, thanks to black pathology, African American students at all income levels do much worse academically than their white, Asian, and Hispanic peers. Indeed, black youths perform so poorly that their test scores consistently drag down the ranking of American students in international scholastic competitions.