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After-effects of Assad regime forces' air-strike in Douma District of East Ghouta region of Damascus, Syria on August 24, 2015. (Motaseem Rashed/Anadolu Agency/Getty Images)

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(Diverse Images/UIG/Getty Images)

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Protestors outside of the Apple store on 5th Avenue on February 23, 2016 in New York City. (Bryan Thomas/Getty Images)

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Pres. Harding in grandstand at Plymouth celebration, 1920. (Boston Public Library/Leslie Jones/Flickr)

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Marcus Trufant of the Seattle Seahawks lays on the ground after suffering a concussion against the Chicago Bears during the NFC Divisional playoff game at Soldier Field on January 16, 2011 in Chicago, Illinois. (Joe Robbins/Getty Images)

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French President Francois Hollande, center, inspects a model of the Royal Australian Navy's Collins class submarine during a visit to French defense contractor Thales' office in Sydney on Nov. 18, 2014. (Dan Himbrechts - Pool/Getty Images)