After the events that took place in the late 1980s and early 1990s, historians were finally allowed access to the Soviet archives. So one would expect a flow of terribly indicting facts. However the results for the bourgeois historians have been really disappointing. Of course, they did find a large amount of new evidence that confirms the shocking crimes of Stalinism. But we never had any doubt about this. Trotsky and his followers condemned these crimes long before any archives were opened. Trotsky’s supporters in Soviet Russia in the 1920 and 1930s had first hand knowledge of these crimes because they were among the first to suffer the consequences of the Stalinist degeneration. Thousands of them died at the hands of Stalin’s henchmen.

Taken from an article linked in the dessalines repo