The Day of Remembrance for Holocaust Victims, Genocides and Other Victims of Fascism in World War II is a national holiday in remembrance in Serbia, commemorated annually on April 22 and dedicated to the memory of mainly Serbs, but also Roma and Jews, mass crimes during the Second World War in the Nazi creation of the Independent State of Croatia and in occupied Yugoslavia.
The date was deliberately chosen because on the night of April 21-22, 1945, two groups of more than 1,000 detainees attempted a breakthrough from the Ustasha Concentration Camp Jasenovac, more precisely from Donja Gradina Camp and Kozara Camp, and from the NDH. only about 100 were saved.
In mid-April 1945, the Ustashas began preparing to leave the camp, including the liquidation of prisoners. About 600 of the 1,073 inmates still alive attacked the Ustasha guards and launched a breakthrough that survived 91 of them.
The remaining 473 detainees, who were not involved in the breakthrough due to infirmity and illness, were killed and burned together with the camp facilities. On the same day, a detention center for the Kozara prisoners, a working part of the camp in the town of Jasenovac, was searched. Of the 167 inmates, 11 survived. Partisans entered the camp in early May 1945.
According to Israeli Jad Yours killed 500,000 Serbs, expelled 250,000 and 200,000 were Catholic, and 90,000 Roma and 30,000 Jews were killed.