Tiananmen Square protests of 1989

Death(s)

241–2,600 

Injuries

7,000–10,000

The Tiananmen Square protests of 1989, commonly known as the June Fourth Incident (六四事件) or more accurate language as '89 Democracy Movement (八九民运) in Chinese, were student-led popular demonstrations in Beijing which took place in the spring of 1989 and received broad support from city residents, exposing deep splits within China's political leadership. The protests were forcibly suppressed by hardline leaders who ordered the military to enforce martial law in the country's capital. The crackdown that initiated on June 3–4 became known as the Tiananmen Square Massacre or the June 4 Massacre as troops with assault rifles and tanks inflicted casualties on unarmed civilians trying to block the military's advance towards Tiananmen Square in the heart of Beijing, which student demonstrators had occupied for seven weeks. The scale of military mobilization and the resulting bloodshed were unprecedented in the history of Beijing, a city with a rich tradition of popular protests in the 20th century.
The Chinese government condemned the protests as a "counter-revolutionary riot", and has prohibited all forms of discussion or remembrance of the events since. Due to the lack of information from China, many aspects of the events remain unknown or unconfirmed. Estimates of the death toll range from a few hundred to the thousands.
The protests were triggered in April 1989 by the death of former Communist Party General Secretary, Hu Yaobang, a liberal reformer, who was deposed after losing a power struggle with hardliners over the direction of political and economic reform.University students who marched and gathered in Tiananmen Square to mourn. Hu also voiced grievances against inflation, limited career prospects, and corruption of the party elite. They called for government accountability, freedom of the press, freedom of speech, and the restoration of workers' control over industry. At the height of the protests, about a million people assembled in the Square.
The government initially took a conciliatory stance toward the protesters. The student-led hunger strike galvanized support for the demonstrators around the country and the protests spread to 400 cities by mid-May. Ultimately, China's paramount leader Deng Xiaoping and other party elders resolved to use force. Party authorities declared martial law on May 20, and mobilized as many as 300,000 troops to Beijing.
In the aftermath of the crackdown, the government conducted widespread arrests of protesters and their supporters, cracked down on other protests around China, expelled foreign journalists and strictly controlled coverage of the events in the domestic press. The police and internal security forces were strengthened. Officials deemed sympathetic to the protests were demoted or purged. Zhao Ziyang was ousted in a party leadership reshuffle and replaced with Jiang Zemin. Political reforms were largely halted and economic reforms did not resume until Deng Xiaoping's 1992 southern tour. The Chinese government was widely condemned internationally for the use of force against the protesters. Western governments imposed economic sanctions and arms embargoes.
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Looking at the photo above you can clearly make out 'Tank Man' bringing a battalion of tanks to a halt simply by standing in the middle of the road before the lead tank in a photo that was 'heard' around the world. Although the cropped close-up version is better remembered and can be seen below.