© Bridgeman Art Library/Peter Newark Vladimir Lenin Speaking to a Crowd in Moscow, 1920.	© Getty Images Nelson Mandela handing over the Webb Ellis Cup to the Springboks captain; Francois Pienaar, after the Rugby World Cup Final in 1995.	© The Independent Khmer Rouge Massacre also known as the Cambodian Genocide between 1975-1979.
© Stan Stearns/UPI John-John Kennedy's salute to his father outside St Matthew's Cathedral after JFK's funeral mass on November 25th, 1963.	National Archives (USA) Adolf Hitler in Paris with Albert Speer, 1940	© Nesseq Hiroshima Nuclear Atomic Bomb - USA Attack On Japan (1945).
© Neal Tosefsky Apartheid benches outside the Cape Town High Court.	© AP/Boris Yaro Robert F. Kennedy lying wounded on the floor immediately after the shooting. Kneeling beside him is 17-year-old Juan Romero, who was shaking Kennedy's hand when Sirhan Sirhan fired the shots, 1968.	© Flickr Bloomington prominently known for being a Hippie community in Indiana.
© Gallo Images Police and pupils at the Soweto uprisings of 1976.	© Clive Limpkin Street Fighting, Bogside, Londonderry, 1969	© Ilyaas Stegmann Group of Cannabis activists protesting in streets of Cape Town, March 26th 2014.
© AP A student carries the body of Hector Petersen, who was slain by police bullets in the riot in 1976.	© Nick Ut/AP Terrified children running from the site of a napalm attack during the Vietnam War in 1972.	© Marc Riboud ‘Flower Child’ he March on the Pentagon was an anti-Vietnam war protest, where activists confronted armed soldiers, 1967.
© Benedict J. Fernandez Poet Allen Ginsberg protesting for the legalisation of cannabis, 1963.	© National Archives German troops parade through Warsaw, Poland, September 1939.	© Courtesy of Museum Africa Black Sash on Johannesburg's City Hall steps, November 1956.
© Richard Sandler A man speaks ay an anti-gay demonstration on Sixth Avenue in 1989.	©National Archive/Newsmakers The statue of Abraham Lincoln is illuminated during a civil rights rally, on August 28, 1963 in Washington, D.C.	© Malcolm Browne Vietnamese Mahayana Buddhist Monk Immolating Himself (June 11, 1963).
© Margaret Bourke-White The Louisville Flood, 1937.	© Grey Villet The early days in the fight for gay rights, 1971.	© Grey Villet Gay rights event, 1971.
© Cecil Stoughton President John F. Kennedy greets a crowd at a political rally in Fort Worth, Texas in this November 22, 1963.	© AP A Helmeted U.S. Helicopter Crewchief watches ground movements of Vietnamese troops from above during a strike against Viet Cong Guerrillas in the Mekong Delta Area, on January 2, 1963.	© Getty Images Civil rights leader Reverend Martin Luther King, Jr. waves to supporters on the Mall in Washington, D.C. during the "March on Washington," on August 28, 1963.
© AFP/Getty Images Picture released on December 2, 1963 of the formation of Surtsey, a new volcanic island off the southern coast of Iceland forged from volcanic eruptions.	© Joe Rosenthal Raising The Flag On Iwo Jima atop Mt. Suribachi during World War II, 1945	© Hugh Van Es / Bettmann A CIA employee helps Vietnamese evacuees onto an Air America helicopter from the top of a building in Saigon, South Vietnam on April 29,1975.
© Zuko Sima ANC supporters marching at a political rally, 2014.	© Horst Faas/AP A Vietnamese man holds the body of his child as South Vietnamese Army Rangers look down from their armored vehicle near the Cambodian border on March 19, 1964.	© Henry Diltz/Corbis John Sebastian, formerly of The Lovin' Spoonful, performs for the masses at Woodstock. August 15-17, 1969.
© Alfred Eisenstaedt An American sailor kissing a woman in a white dress on Victory over Japan Day (V-J Day) in Times Square in New York City, on August 14, 1945.	© AP Photo/Horst Faas Hovering U.S. Army helicopters pour machine gun fire into tree line to cover the advance of Vietnamese ground troops in an attack on a Viet Cong camp 18 miles north of Tay Ninh on March 29, 1965.	© Eddie Adams Saigon Execution, Vietnam, 1968
© AP Photo/Jeff Widener A Chinese man stands alone to block a line of tanks heading east on Beijing's Cangan Boulevard in Tiananmen Square, on on June 5, 1989.	© Associated Press Skulls from the Khmer Rouge era in Phnom Penh, Cambodia, 1975 - 1979.