In this case, Moore discusses the roots of racism in Latin America, and traces its distinctive features to the Arab conquest of the Iberian Peninsula:
The Arab-Spanish-Latin American pattern was far more permissive of interracial sex and incorporating racial differences, but, Moore adds, not without its own light-skinned hierarchy. Moore asserts that racial mixing was a very normal occurrence in the Arab world; socially acceptable racial mixing, however, only goes in one direction. Moore postulates the existence in Latin America of a "racial philosophy of eugenics" that encourages a "unilateral … sexual commingling between white [or light skinned] males and the females of the physically conquered and socially inferior race."
Actually, this characterization race relations in the Arab world puts an interesting spin on some other links I found recently about Muslims and Latinas.