Союз освобождения
In 1929 Mikałaj Ułaščyk graduated from the Belarusian State University, specialised in history. In 1930 he was arrested by the NKVD together with a large number of Belarusian intellectuals accused of "anti-Soviet activity" and "nationalism" within the framed-up Case of the Union of Liberation of Belarus. He was deported to a labor camp close to Vyatka. After his release in 1935 he was again twice arrested and imprisoned in the following years (1941–1942, 1950–1955) because of his active opposing the official Soviet propagandist historiography.