Captured in video, here are 8 momentous videos in history that are held in our collective conscious.
News broadcasts and YouTube have brought us images of defining moments in history, the good the bad and the terrible.
The footage is often haunting and familiar, as if it had happened yesterday.
The Bombing of Hiroshima, Nagasaki
The Tanks of Tiananmen Square
Berlin Wall Falls
First Footage of Gandhi Speaking
9/11
Haiti Earthquake
Martin Luther King Killed
Iranian Freedom Riot Footage