四五运动
The holiday is often marked by people paying respects to those who are considered national or legendary heroes or those exemplary Chinese figures who died in events considered politically sensitive. The April Fifth Movement and the Tiananmen Incident were major events in Chinese history which occurred on Qingming. After Premier Zhou Enlai died in 1976, thousands honored him during the festival to pay their respects. Many also pay respects to victims of the Tiananmen Square protests in 1989 and Zhao Ziyang.