四五运动
The Tiananmen Incident ( or the April 5 Tiananmen Incident) was a mass gathering and protest that took place on 5 April 1976, at Tiananmen Square in Beijing, China. The incident occurred on the traditional day of mourning, the Qingming Festival, after the Nanjing Incident, and was triggered by the death of Premier Zhou Enlai earlier that year. Some people strongly disapproved of the removal of the displays of mourning, and began gathering in the Square to protest against the central authorities, then largely under the auspices of the Gang of Four, who ordered the Square to be cleared.