Sex and racism have always been tied together. Look at the thousands of black men who got lynched and castrated. The reason the Klan came into being was to protect white southern women.
In a country where misery and want were the foundation of the social structure, famine was periodic, death from starvation common, disease pervasive, thievery normal, and graft and corruption taken for granted, the elimination of these conditions in Communist China is so striking that negative aspects of the new rule fade in relative importance.