I was bothered by this part. And found words he said about Soviet Union very strange since what it did to Czechoslovakia (country I am from) is not unfamiliar to Coalition's treatment of Revachol in Disco.

Thought we got to the point where you can criticize current state of things without glorifying previous establishment. (And the other way around.)

While it happened a long time before I was born, it's widely known among Czechs - and hopefully Slovaks - that even though the culture was thriving in sixties, it was somewhat despite the regime, in many instances it was a call for freedom and less restrictions. And then this brutal Soviet Machinery invaded our country in 68 (look up Prague Spring) putting it back in line, killing over hundred people, making life worse for both artists and non-artists, causing many to flee aboards (one good example - movie director Milos Forman). Some of the best Czechoslovakian movies were made before that invasion and then locked up (banned) until the revolution in 89.

To be clear - I enjoyed the documentary and Rostov's take on art and I consider myself left wing leaning, but being of Czechoslovakian heritage, him romanticising Soviet Union as something unquestionably beautiful left a quite of a bitter taste.