Mexican stamp with racist motif

aunt jemima, ben vinson, black, caballero, carlos caballero, character, comic, elisa velazquez, fox, government, history, in may, issued, memin, mexican, mexican postal service, mexico, noted, penalosa, penn state university, president vicente fox, publisher manelick de, quotit, quotthis, sergio penalosa, series, stamp, stamps, stamps are, united states