Bosnia, Ron Haviv, 1992
The war in Bosnia had not yet begun when American Ron Haviv took this picture of a Serb kicking a Muslim woman who had been shot by Serb forces. Haviv was determined to document the cruelty he was witnessing and, in a split second, decided to risk it. TIME published the photo a week later, and the image of casual hatred ignited broad debate over the international response to the worsening conflict.