Man is used to the fact that there are languages which he does not at first understand and which must be learned, but because art is primarily visual he expects that he should get the message immediately and is apt to be affronted if he doesn't.
“No one thinks of Mexico and Peru as black. But Mexico and Peru together got 700,000 Africans in the slave trade. The coast of Acapulco was a black city in the 1870s. And the Veracruz Coast on the gulf of Mexico and the Costa Chica, south of Acapulco are traditional black lands.”