April 9 tragedy
The April 9 tragedy (also known as Tbilisi massacre or Tbilisi tragedy) refers to the events in Tbilisi, Georgian Soviet Socialist Republic, on April 9, 1989, when an anti-Soviet, pro-independence demonstration was brutally crushed by the Soviet Army, resulting in 21 deaths and hundreds of injuries. April 9 is now remembered as the Day of National Unity ( "erovnuli ertianobis dghe"), an annual public holiday.