60 Minutes: The Smithsonian's African-American history museum is set to debut soon

Four hundred years have past since America's original sin and still riots are ignited in the friction between race and justice. As this debate continues the Smithsonian is completing a monumental project, the $500 million National Museum of African American History and Culture. The idea was authorized by an act of Congress which called it, quote, "a tribute to the Negro's contribution to the achievements of America." The words are jarring because the act was written in 1929. Building the museum has been a long struggle, just like the story it hopes to tell.