Well, that doesn't fit with the 'Slavery was the worst in the US!' crap

The preference for white donors reflects the persistent racism in a country where social class and skin color correlate with glaring accuracy. More than 50% of Brazilians are black or mixed-race, a legacy of Brazil having imported more than 10 times as many African slaves than the U.S.; it was the last Western country to ban slavery, in 1888. The descendants of white colonizers and immigrants—many of whom were lured to Brazil in the late 19th and early 20th centuries when the ruling elite explicitly sought to “whiten” the population—control most of the country’s political power and wealth.