Jeju massacre

The Jeju Uprising was a revolt on Jeju island off the south coast of the Korean Peninsula, beginning on April 3, 1948. Between 14,000 and 60,000 individuals were killed in fighting or execution between various factions on the island. The brutal suppression of this rebellion by the South Korean army resulted in tens of thousands of deaths, the destruction of many villages on the island, and sparking rebellions on the Korean mainland. The rebellion, which included the mutiny of several hundred members of the South Korean 11th Constabulary Regiment, lasted until May 1949, although small isolated pockets of fighting continued into 1953.^[4] Many residents of Jeju escaped from the massacre to Japan.

• http://en.wikipedia.org/wiki/Jeju massacre