China_Beijing in 1989. Chinese army troops occupy positions on Tiananmen Square in the centre of Beijing a week after the massacre of student protesters in June 1989
Photographs of Chinese army and security personel gurding the area in and around Tiananmen Square, taken secretly from inside a blacked out taxi as photographers were under threat of being arrested if they worked openly in the area around Tiananmen Square after the massacre.
Wikipeadia: The Tiananmen Square protests of 1989, commonly known in mainland China as the June Fourth Incident (六四事件), were student-led demonstrations in Beijing, the capital of the People's Republic of China, in 1989. More broadly, it refers to the popular national movement inspired by the Beijing protests during that period, sometimes called the '89 Democracy Movement (八九民运). The protests were forcibly suppressed after Chinese Premier Li Peng declared martial law. In what became known in the West as the Tiananmen Square Massacre, troops with automatic rifles and tanks fired at the demonstrators trying to block the military's advance towards Tiananmen Square. The number of civilian deaths has been estimated variously from 180 to 10,454.