Title: Photos that changed the world
Description: A compilation of memorable photographs captures the execution of a Viet Cong officer, a woman mourning over one of Kent State's massacre victims, and Martin Luther King delivering his "I have a dream" speech.
Subjects: Modern History, Photojournalism, Bildband, Modern civilization, World history, Twentieth century, Pictorial works, History, History, modern, 20th century, Photography in historiography
Time periods: 20th century