1.
This group of workers suspended from the cables of the Brooklyn Bridge in 1914.
2.
W.H. Murphy and his associate demonstrating their bulletproof vest in 1923.
3.
This group of officials posing for a portrait during the construction of the Hoover Dam in 1935.
4.
A London milkman sticking to his schedule despite the German bombing raid in 1940.
5.
This PoW defiantly confronting Heinrich Himmler during an inspection in 1940-1941.
6.
August Landmesser refusing to perform the Nazi salute at a crowded rally.
7.
U.S. military raising the American flag on Iwo Jima in February, 1945.
8.
Red Army soldiers hoisting a hammer-and-sickle flag over the Reichstag in Berlin, 1945.
9.
Rosa Parks's mugshot in 1955 after refusing to give up her seat on a public bus to a white passenger.
10.
Martin Luther King Jr. after delivering his “I Have a Dream” speech in 1963.
12.
The Black Power salute of gold medallist Tommie Smith and bronze medalist John Carlos during the 1968 Summer Olympic Games.
13.
Neil Armstrong on the verge of tears after first stepping on the Moon in July, 1969.
14.
Philippe Petit walking across a tightrope between the World Trade Center's Twin Towers in 1974.
15.
This lone man standing against a convoy of tanks heading to Tiananmen Square in 1989.
16.
This sign of patriotism and perseverance in the face of terrorism on September 11th, 2001.
17.
This farmer spraying milk at police forces during a protest against falling milk prices, at the EU Headquarters in 2009.
18.
NASA astronaut Tracy Caldwell Dyson peering out the window of the International Space Station in 2010.
19.
This couple kissing in Vancouver's streets amid riots, following the Stanley Cup Finals in 2011.
20.
This adorable pair who were the first same-sex couple to marry at Manhattan's City Clerk's Office 2011.
21.
This man offering motivational music during a battle in Sirte, Libya, against forces loyal to Muammar Gaddafi in 2011.
22.
Felix Baumgartner moments before his historic jump to Earth from the stratosphere in October, 2012.
23.
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.
24.
This woman in Ferguson, Missouri, demonstrating on her knees amid a cloud of tear gas in 2014.
