National Museum Of African American History And Culture Opens In Washington, D.C. [Getty Images]

WASHINGTON, DC - SEPTEMBER 24: U.S President Barack Obama speaks at the opening ceremony of the Smithsonian National Museum of African American History and Culture on September 24, 2016 in Washington, DC. The museum is opening thirteen years after Congress and President George W. Bush authorized its construction. (Photo by Olivier Douliery-Pool/Getty Images)

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