A polar bear fast asleep at London Zoo. (Photo by Fox Photos/Getty Images). 1961

“Friedrich Christian Anton “Fritz” Lang (December 5, 1890 – August 2, 1976) was an Austrian-American filmmaker, screenwriter, and occasional film producer and actor. One of the best known émigrés from Germany's school of Expressionism, he was dubbed the “Master of Darkness” by the British Film Institute. His most famous films are the groundbreaking «Metropolis» (the world's most expensive silent film at the time of its release) and «M», made before he moved to the United States, his iconic precursor to the film noir genre”. – Wikipedia

Photo: Director Fritz Lang (right) and crew members inspect the robot from the film “Metropolis”, which is made to resemble the saintly Maria. (Photo by Hulton Archive/Getty Images). Circa 1926

Mary McHugh mourns her slain fiance Sgt. James Regan at “Section 60” of the Arlington National Cemetery May 27, 2007. Regan, a US Army Ranger, was killed by an IED explosion in Iraq. (Photo by John Moore/Getty Images)

A woman poses with her tattoo during the Shanghai Tattoo Extreme & Body Art Expo 2017 in Shanghai, China September 2, 2017. (Photo by Aly Song/Reuters)

In advance of Fleet Week performances, the U.S. Navy Blue Angels and Team Oracle aerobatics pilot Sean D. Tucker fly over the San Francisco Bay during a photo flight on Thursday, October 5, 2017. (Photo by Noah Berger/AP Photo)

Students hold their weapons before the swearing in ceremony for the military students, in Bucharest, Romania, Wednesday, October 25, 2017. The Romanian Army is proudly celebrating their Army Day and marking 100-years since the landmark battle of Marasesti, a key World War I battle in 1917 when Romanian and Russian soldiers defeated German troops, halting a German offensive. (Photo by Vadim Ghirda/AP Photo)

Fans of Chris Mazdzer of the United States including his girlfriend Mara Marian (C) react following his third run during the Luge Men's Singles on day two of the PyeongChang 2018 Winter Olympic Games at Olympic Sliding Centre on February 11, 2018 in Pyeongchang-gun, South Korea. (Photo by Alexander Hassenstein/Getty Images)

To mark the occasion of International Women' s Day on March 8, 2018 AFP presents a series of photos depicting women performing roles or working in professions more traditionally held by men. Here: Professional wrestler Cristal (Crystal) poses for a photograph in her trainig place on February 09, 2018 in Mexico city, Mexico. (Photo by Omar Torres/AFP Photo)