Ideologically Relevant

In the article, Racial Formations, the differences, in categorization of race in Latin American countries and the Unites States, are discussed. In many Latin American societies, race is not generally a white and black concept; the lines are blurred. The authors suggest that this system would not be comprehensible “within the logic of racial categories in the US.” (15) What is the logic behind the racial categories in the US? Are these categories a continuation of racist principles?