https://en.wikipedia.org/wiki/Population_transfer_in_the_Soviet_UnionThe Soviet Union also practiced deportations in occupied territories, with over 50,000 perishing from the Baltic States and 300,000 to 360,000 perishing during the expulsion of Germans from Eastern Europe due to Soviet deportation, massacres, and internment and labour camps
Nicolas Werth places overall deaths closer to some 1 to 1.5 million perishing as a result of the deportations.
https://en.wikipedia.org/wiki/HolodomorTotal deaths Around 3.5 to 5 million; see death toll
https://en.wikipedia.org/wiki/Vinnytsia_massacreThe Vinnytsia massacre was the mass execution of between 9,000 and 11,000 people in the Ukrainian town of Vinnytsia by the Soviet secret police NKVD during the Great Purge in 1937–1938
https://en.wikipedia.org/wiki/Katyn_massacrehe Katyn massacre[a] was a series of mass executions of nearly 22,000 Polish military officers and intelligentsia prisoners of war carried out by the Soviet Union
https://en.wikipedia.org/wiki/F%C3%A2nt%C3%A2na_Alb%C4%83_massacreThe Fântâna Albă massacre took place on 1 April 1941 in Northern Bukovina when up to 3,000 civilians were killed when their attempt to forcefully cross the border from the Soviet Union to Romania, near the village of Fântâna Albă, now in Chernivtsi Oblast, Ukraine, was met with open fire by the Soviet Border Troops.
