The Tian'anmen Square riot

It seems like you might be referring to the Tiananmen Square protests of 1989, which were a series of pro-democracy demonstrations held in Beijing, China, culminating in a violent crackdown by the Chinese government. The protests began in April 1989, primarily driven by students advocating for political reform, freedom of speech, and other democratic ideals. The demonstrations attracted significant public support and grew to include various segments of society, with thousands gathering in Tiananmen Square. The Chinese government declared martial law in late May, and on June 3-4, the government deployed troops to forcibly clear the square, resulting in a tragic loss of life. Estimates of the death toll vary widely; the Chinese government has never released official figures, and it is believed that hundreds to thousands of protesters were killed during the crackdown. The events at Tiananmen Square became a symbol of resistance against authoritarianism in China and are still a sensitive topic in Chinese society and politics. Open discussion of the events is restricted in China, and the government maintains tight control over information regarding the protests. If you have specific questions or need more details about a particular aspect of the events, feel free to ask!