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Boys swim in the Lincoln Memorial Reflecting Pool in 1926 despite the fact that it was forbidden. Universal History Archive/UIG via Getty Images hide caption

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Universal History Archive/UIG via Getty Images

White House Press Secretary Sean Spicer delivers a statement in the Brady Briefing Room of the White House on Saturday. Mandel Ngan /AFP/Getty Images hide caption

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Mandel Ngan /AFP/Getty Images

National Geodetic Survey crew members Roy Anderson, left, and Steve Breidenbach set up survey equipment used to measure the height of the Washington Monument. National Geodetic Survey/NOAA hide caption

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National Geodetic Survey/NOAA

The man who set himself on fire Friday at the National Mall was John Constantino, 64, of Mount Laurel, N.J., police say. Constantino's family links the act to "a long battle with mental illness." Alex Brandon/AP hide caption

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Alex Brandon/AP

Police investigate the scene after a man set himself ablaze on the National Mall's lawn Friday afternoon in Washington, DC. The man did not survive his injuries, according to reports. Win McNamee/Getty Images hide caption

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Win McNamee/Getty Images