Gunfire was brought to the steps of President Truman's Washington home, Blair House, as two assassins tried to kill the chief executive, November 1, 1950. One of the gunmen, Oscar Collazzo of New York, lay wounded at the bottom of Blair House's front steps after the president's police guard had finished their work, at the cost of one guards' life, Dec. 9, 1950. The second gunman was killed. (Photo by Harvey Georges/AP Photo)

American film and theater actress, singer and dancer Shirley MacLaine. (Photo by Philippe Halsman)

A female motorcycle cop directs traffic wearing crash helmet, Haywarket Square, Boston, Massachusetts, 1979. (Photo by Spencer Grant/Getty Images)

Marianne Brauns jumping a breakwater on the beach, wearing a structured blue swimsuit with white trim. (Photo by Carl Sutton/Hulton Archive/Getty Images). Circa 1950

Iraqi security forces vehicles take part in a military parade in the streets of Baghdad, Iraq July 12, 2016. Social media activists posted images of tanks, armored vehicles, cannons, soldiers, police officers, and PMF members in Saadoun Street. The photos spiked a rumor of military coup. Military and security advisor and expert Lt. Diyaa al-Wakil said that it is only normal for such rumors to spread since there were no prior announcements about the training. (Photo by Khalid al Mousily/Reuters)

Young man making the O.K. sign. (Photo by George Marks/Retrofile/Getty Images). Circa 1950s

A visitors to the National Galleries of Scotland view the work “A girl” of sculptor Ron Mueck on August 4, 2006 Edinburgh in Scotland. (Photo by Jeff J Mitchell/Getty Images)

A workman takes a siesta on a girder during the building of Radio City, the city of New York spread out below. (Photo by General Photographic Agency/Getty Images). Circa 1933