Vintage American history photo of a nuclear weapon test by the American military at Bikini Atoll, Micronesia on July 25, 1946. The explosion was part of Operation Crossroads.
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President Barack Obama speaks during the dedication ceremony for the Smithsonian Museum of African American History and Culture in Washington, DC, on Sept. 24, 2016.
Pablo Martinez Monsivais/AP
From left, Octavia Spencer, Janelle Monae and Taraji P. Henson accept the award for outstanding performance by a cast in a motion picture for Hidden Figures at the 23rd annual Screen Actors Guild Awards on Jan. 29 in Los Angeles.
Thousands gather at Denver's City Center Park on Saturday for a rally in support of the Muslim community and to protest President Trump's executive order to temporarily ban some refugees from seven mostly Muslim countries.