There is a lack of critical assessment of the past. But you have to understand that the current ruling elite is actually the old ruling elite. So they are incapable of a self-critical approach to the past.
in reference to Persepolis and all palaces, cities and temples of the past: could these wonders have come into being without that suffering? without the overseer's whip, the slave's fear, the ruler's vanity? was not the monumentality of past epochs created by that which is negative and evil in man?
In modern Russia, you have no official, formal assessment of this past. Nobody in any Russian document has said that the policy of the Soviet government was criminal, that it was terrible. No one has ever said this.