A main reason that an estimated 20 million Soviet citizens were imprisoned under Stalin was that they were ...

According to New York Times, 2o million Soviet died being victims of his regime. These people are coming from labor camps, victims of famine and collectivization. This reportedly came out on the Russian's tabloid, Argumenti I Fakti. In addition to this, the same estimate of death was also found out with the soldiers who fought in this times. This is an overall of 40 million deaths on Stalin's term.