The Enemy, 1944. With the outbreak of world war two, photojournalism was enlisted in defence of Mother Russia. In this photo by Anatoli Egorov, who was wounded in action, corporal Stepan Vasiljevich Ovcharenko shoots at enemy troops with a machine gun. (Photo by Anatoli Egorov/Lumiere Brothers Center for Photography)

Participants run through the streets of the Back Bay during the 16th annual Santa Speedo Run in Boston, Massachusetts, December 12, 2015. (Photo by Brian Snyder/Reuters)

Los Angeles native Mike Stilkey has always been attracted to painting and drawing not only on vintage paper, record covers and book pages, but on the books themselves. Using a mix of ink, colored pencil, paint and lacquer, Stilkey depicts a melancholic and at times a whimsical cast of characters inhabiting ambiguous spaces and narratives of fantasy and fairy tales. A lingering sense of loss and longing hints at emotional depth and draws the viewer into their introspective thrall with a mixture of capricious poetry, wit, and mystery. (Photo by Mike Stilkey)

A visitor feeds a food pellet to a giraffe in the Giraffe Centre in Nairobi, Kenya January 15, 2017. (Photo by Goran Tomasevic/Reuters)

In this January 6, 2017 photo, transgender inmates get a security check from female officers before entering their cell at Pattaya Remand Prison in Pattaya, Chonburi province, Thailand. The prison separates lesbian, gay, bisexual and transgender prisoners from other inmates, a little-known policy despite being in place nationwide since 1993, according to the Department of Corrections. (Photo by Sakchai Lalit/AP Photo)

Two Inuit children at Point Barrow, Alaska, holding the tusks of a large walrus, probably killed for food, circa 1930. (Photo by General Photographic Agency/Getty Images)

A light railway train passes through a residential building on March 18, 2017 in Chongqing, China. Chongqing Rail Transit No.2 and a 19-storey residential building have been built across each other. The railway set its Liziba Station on the sixth to eighth floor in the building with noise reduction equipment. (Photo by VCG/VCG via Getty Images)

A Hindu devotee is helped by other people as she walks on burning coals during a religious procession Vel Festival of the Hindu goddess Maha Mariamman (Sheetla Mata), in New Delhi, India, 06 April 2017. People get their bodies pierced with different kinds of metal needles and rods and participate in a religious procession as thanks giving gesture to the goddess in return of their fulfilled wishes during the annual procession. (Photo by Rajat Gupta/EPA)