Stockholm, January 19, AzerTAc.  A commemorative event to mark the 25th anniversary of the 20 January tragedy has been organized in the Kingdom of Sweden.The ceremony started with a minute silence for victims of the January tragedy.Addressing the event, Ambassador Adish Mammadov highlighted the history of the 20 January events. Mammadov said it was the day of the unity of Azerbaijan`s people struggling for the country’s territorial integrity.He called the tragedy one of the bloodiest crimes of the Soviet empire against its citizens. The Ambassador drew the participants’ attention to the fact that the Soviet troops had used internationally prohibited weapons in Baku, and slaughtered women, children and the elderly.Mammadov said Azerbaijan’s great son Heydar Aliyev, who then lived in Moscow, came to Azerbaijan’s permanent representative office - a day after the tragedy - and strongly condemned those who committed the January massacre. He noted that after Heydar Aliyev`s return to power, a political and legal assessment was given to the tragedy.