> to express national memory
The culture has been preserved using non-provocative way by not mixing it with politic. Surely we must be respectful and thankful to those going rather provocative way and suffering.
The daily Soviet system issues have been successfully mentioned in a subtle way in films since middle 60s, which became classic. I'm not aware of similar from movies from China.
Famous Belorussian and Ukrainian songs have been performed in public on radio, TV in the USSR.
Even today some western world artists say, that sure, of course, the culture is not separate from politic while the others say they are doing art not politics and welcome questions about their public art not their private political opinions and preferences. Similar to many singers and actors dislike questions about their private life and lovers instead of what actually matters: their art of doing music, singing, performing.
> ... what might have happened.
Since middle 80s the level of freedom started rapidly to increase.