Black January - Over the night from 19 to 20-th January, 1990 without preliminary declaration of the state of emergency military units of former Soviet Union were entered into Baku city and some regions of Azerbaijan. The invasion into Baku of a large contingent of Soviet Army units, interior troops and special destination detachments was accompanied by particular cruelty and unprecedented atrocities. Reprisals were inflicted toward peace population, hundreds of people were killed, wounded, missing.