Some interpretations of the meanings of race and ethnicity in contemporary Unites States. Since the new century the United States has witnessed a popular debate on the concept of "post-racial America". This debate has attracted scholarly attention, and has been greatly enhanced by the election as President of Barack H. Obama, a bi-racial person who also happens to be the son of an immigrant student from Africa. The article presents a synthetic review of some of the books and articles on the subject itself, as well as historical interpretations of the multiracial history of the U.S.
Keywords: United States, post-racial society, race, ethnicity, Barack H. Obama.