Free City incident
The Svobodny incident (Korean: 자유시 참변; Hanja: 自由市慘變), also known as the Jayu City incident (자유시 사기변; 自由市事庋變) and the Heukha incident (흑하사변; 黑河事變), occurred on June 28, 1921, in Svobodny (Russian for "free") in the Far East Republic (currently Amur Oblast, Russia) where the Korean exiled independence fighters who refused to accept command of the Red Army were surrounded and suppressed. == Names == The Koreans who lived there called it "Free City." It is also called the Jayu City Incident, the Heukha Incident, and the Black River Incident, between independent army units and the Russian Red Army.