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In June 1989 the communist authorities in China crushed a huge pro-democracy protest in Beijing. Demonstrators, most of them students, had been occupying Tiananmen Square for weeks on end. On June 4th the army was sent in to clear the area, killing hundreds. Diane Wei Liang and Hayou Zhang were among the protestors - they remember that day.

(Photo: Demonstrators in Tiananmen Square. Credit: AFP/Getty Images)