Among the silliest of current left-wing demands is that white people cease “cultural appropriation”, that is, the borrowing of styles, foods, dress, or art of other cultures. A Latina student in California insisted that hoop earrings were an invention of her people and should not be worn by those with paler skin. A white Canadian politician quoted Beyoncé and was denounced by Black Lives Matter; a white basketball player was assaulted for braiding his hair.