Rudi Kistler and Maurus Oehmann, Mannheim 2012 Courtesy of Francois Brunelle hide caption

itoggle caption Courtesy of Francois Brunelle

This photograph of Aline Marie praying outside St. Rose of Lima church in Newtown, Conn., has become the focus of a conversation surrounding ethics and photography. Emmanuel Dunand/AFP/Getty Images hide caption

itoggle caption Emmanuel Dunand/AFP/Getty Images

Aline Marie prays outside St. Rose of Lima church in Newtown, Conn., on the day of the school shooting. She says being photographed made her feel "like a zoo animal." The photographer says he tried hard to respect her privacy and grief. Emmanuel Dunand/AFP/Getty Images hide caption

itoggle caption Emmanuel Dunand/AFP/Getty Images

President Truman, wearing a shirt that reads "Coach Truman, Athletic Department," leads exercises on the deck of the USS Missouri on his return trip to Washington from Brazil, 1947. Byron H. Rollins/AP/Courtesy of WHNPA hide caption

itoggle caption Byron H. Rollins/AP/Courtesy of WHNPA

Jan. 9, 2013 David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

"I drove out past the town of Marion beneath a quiet sky, as beautiful as anything I'd seen, to the house of a woman who lived by herself." 1969 Eugene Richards/Magnum Photos hide caption

itoggle caption Eugene Richards/Magnum Photos