The Massacres
The NKVD and the Red Army killed prisoners in many places from Poland (e.g. Białystok) to Crimea. Immediately after the start of the German invasion of the USSR, the NKVD commenced the execution of large numbers of prisoners in most of their prisons, while the remainder was to be evacuated in death marches. Most of them were political prisoners, imprisoned and executed without a trial. The massacres were documented by German authorities and used in anti-Soviet and anti-Jewish propaganda. With few exceptions, the huge group of prisoners of Western Belarus and Western Ukraine was either marched eastwards or executed. After the war and in recent years, the authorities of Germany, Poland, Belarus, and Israel identified no fewer than 25 prisons whose prisoners were killed—and a much larger number of mass execution sites. Among the notable cases of such mass execution of prisoners were the following:
Read more about this topic: NKVD Prisoner Massacres