The Tank Man of Tiananmen Square

Twenty years ago this Friday, one of the most famous images (or rather four images of the same event) ever taken was caught on film in Tiananmen Square in Beijing, China. A man, who became known as "Tank Man" stood in front of a row of tanks. Even to this day, virtually nothing is known about the man, even down to what his name is.

The New York Times tracked down the four photographers whose pictures have been shown over and over and TV and in magazines to get their recollections of the event.

As Arthur Tsang Hin Wah, the man who took the photo for Reuters, said, "I am glad that it still has impact after 20 years. Four different versions but one same focus."