For historians of human enslavement—and for black Africans more generally—the recently concluded African Nations soccer cup revealed images of an ugliness that has roots in the Muslim world's trans-Saharan slave trade. As Senegal defeated host Morocco in the final, sections of the Moroccan crowd hurled racial insults at the Senegalese—just as Algerian spectators had, earlier in the tournament, when their team was beaten by Nigeria. "Get the black slave," affronted Algerian soccer fans chanted.