An investigation conducted by the Prosecutor General's Office of the Soviet Union (1990–1991) and the Russian Federation (1991–2004), confirmed Soviet responsibility for the massacres.
So, I don't get your point?
You do believe versions of Soviet government, or don't?
You do believe Nuremberg Tribunal official statements, or don't?
Make your point.
Or you do believe only in things that you want to believe and completely ignore other - that are not comfortable to you?
If I said to you that Presidents Gorbachev and Eltcin were rat motherfu*ers and most of population of former USSR damned them for what they did - you do believe me or do not? Is this true or not?
Do you believe me if I said that most of historical decisions like that you quoted in late 80s-early 90s were COMPLETE POLITICAL and had no real historical scientific background?