On April 12, 1927, Chiang Kai-shek staged a coup in Shanghai. The picture shows the scene as warlords arrested communists and the revolutionary masses in the streets. [Photo/Memorial Hall at the Site of the Fifth National Congress of the Communist Party of China]

On April 12, 1927, the Kuomintang reactionaries launched a counter-revolutionary coup in Shanghai, where they wantonly slaughtered communists and revolutionary masses. Li Dazhao was killed by Manchurian warlord Chang Tso-lin. The picture shows the front page of the April 29 edition of the newspaper "Morning News". [Photo/Exhibition Road to Rejuvenation at the National Museum of China]

On April 12, 1927, the Kuomintang reactionaries launched a counter-revolutionary coup in Shanghai, where they wantonly slaughtered communists and revolutionary masses. The picture shows a massacre site. [Photo/Exhibition Road to Rejuvenation at the National Museum of China]