This group of workers suspended from the cables of the Brooklyn Bridge in 1914.

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W.H. Murphy and his associate demonstrating their bulletproof vest in 1923.

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This group of officials posing for a portrait during the construction of the Hoover Dam in 1935.

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A London milkman sticking to his schedule despite the German bombing raid in 1940.

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This PoW defiantly confronting Heinrich Himmler during an inspection in 1940-1941.

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August Landmesser refusing to perform the Nazi salute at a crowded rally.

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After the completion of a Nazi warship in 1936, shipbuilder August Landmesser defiantly crossed his arms in protest as the others around him saluted. His partner, a Jewish woman named Irma Eckler, would eventually be sent to a concentration camp, while Landmesser was forced into military service. He later went missing in action and is believed to have been killed in combat.

U.S. military raising the American flag on Iwo Jima in February, 1945.

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Three of the Marines depicted in this picture were killed in the following days. Despite the danger of a hostile conflict zone, the picture was so perfectly framed that it has led to debates over whether the shot was actually posed by the photographer.

Red Army soldiers hoisting a hammer-and-sickle flag over the Reichstag in Berlin, 1945.

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Rosa Parks’s mugshot in 1955 after refusing to give up her seat on a public bus to a white passenger.

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Martin Luther King Jr. after delivering his “I Have a Dream” speech in 1963.

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Muhammad Ali after dropping Sonny Liston in 1965.

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The Black Power salute of gold medallist Tommie Smith and bronze medalist John Carlos during the 1968 Summer Olympic Games.

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Neil Armstrong on the verge of tears after first stepping on the Moon in July, 1969.

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Philippe Petit walking across a tightrope between the World Trade Center’s Twin Towers in 1974.

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This lone man standing against a convoy of tanks heading to Tiananmen Square in 1989.

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This sign of patriotism and perseverance in the face of terrorism on September 11th, 2001.

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This farmer spraying milk at police forces during a protest against falling milk prices, at the EU Headquarters in 2009.

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NASA astronaut Tracy Caldwell Dyson peering out the window of the International Space Station in 2010.

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This couple kissing in Vancouver’s streets amid riots, following the Stanley Cup Finals in 2011.

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This adorable pair who were the first same-sex couple to marry at Manhattan’s City Clerk’s Office 2011.

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This man offering motivational music during a battle in Sirte, Libya, against forces loyal to Muammar Gaddafi in 2011.

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Felix Baumgartner moments before his historic jump to Earth from the stratosphere in October, 2012.

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Miles, a five-year-old battling leukemia, dressed as “Batkid” as part of a day arranged by the Make-A-Wish Foundation in San Francisco in 2013.

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This woman in Ferguson, Missouri, demonstrating on her knees amid a cloud of tear gas in 2014.

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A German Communist holds his head high as he faces a firing squad in Munich, 1919.

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German prisoners of war react to watching film footage from concentration camps, 1945.

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The main entrance to the Auschwitz Birkenau death camp, which was built in 1944 and transported prisoners straight to their death.

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This absurdly long punt gun could discharge a pound of shot each time it was fired.

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The famous Red Baron, who was a feared fighter pilot in WWI is seen here with his dog in 1916.

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This is the last photo that was taken of the Titanic, 1912.

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Mark Twain fools around in the laboratory of Nikola Tesla, 1894.

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Soviet soldiers are treated to a performance similar to the American USO shows in 1945.

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Books are burned during the Hungarian Revolution of 1956.

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A bomber rains death and destruction on Kobe, Japan, 1945.

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Lt. Custer is pictured in color having a bachelors’ picnic with Union troops, 1862.

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You have to have balls of steel to voluntarily test a bulletproof vest, 1923.

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Stalin clowns around with his bodyguard who he probably had murdered after this photo.

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Joseph Goebbels on his wedding day, with best man and mass murderer Adolf Hitler in tow.

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An SAS detachment is armed to the teeth in the North African desert, 1943.

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Tsar Nicholas is seen rough housing with his friend/man servant/human carpet in 1899.

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The famous day in 1967 when Sweden switched from driving on the left hand side to the right.

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Young British aristocrats stand near to some less privileged children in 1937.

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Children are overcome by emotion during a puppet show in Paris, 1963.

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