It has been 25 years since massive protests in Beijing and other Chinese cities, and China's crackdown on the pro-democracy demonstrations in Tiananmen Square.
The Crackdown in Tiananmen Square

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Hundreds of thousands of people fill Tiananmen Square in Beijing, May 17, 1989.

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Beijing University students relax in Tiananmen Square as their hunger strike for democracy begins a fourth day, May 16, 1989.

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Students shout after breaking through a police blockade during a pro-democracy march to Tiananmen Square, Beijing, May 4 1989.

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Student demonstrators scuffle with police as they try to break the guard line to march to Tiananmen Square in Beijing, April 27, 1989.