The Shanghai massacre of 12 April 1927 was a violent suppression of Communist Party of China (CPC) organizations in Shanghai by the military forces of Chiang Kai-shek's conservative faction in the Kuomintang (KMT). Following the incident, the latter carried out a full-scale purge of communists in all areas under their control and even more violent suppressions occurred in cities such as Guangzhou and Changsha. The purge led to an open split between the left- and right-wings of the KMT, with Chiang Kai-shek establishing himself as the leader of the right-wing at Nanjing in opposition to the original left-wing KMT government led by Wang Jingwei in Wuhan.