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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Chinese students link arms in solidarity at dawn in Tiananmen Square in Beijing, April 22, 1989.

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A student leader tries in vain to settle down a crowd of Beijing University students who converged on the Chinese Communist Party headquarters after demonstrating at Tiananmen Square in Beijing, April 19, 1989.