the foundation of communism looks to deracinate people in order to establish internationalist domination. it does this through marxist terror programs which genocide large numbers of ppl such as regional cultures, property owners, business owners and artists. after the executions deportations and jails the system then destroys the traditions and cultures, promotes feminism to mobilise women and then slowly erodes psyche of people through social realism which is targeted annihilation of all national heritage to marxism. because foundation of marxism is state domination and "equality" of the "proletariat" (a bullshit word to begin with) it automatically evolves into what you see today.   demographics were fucked thanks to communism which created a massive internal welfare bubble which exploded and all the old generation are helpless dependents with no skills and who own very little and thus require a massive pension just to survive. this creates economic pressure on younger generations hence the problems with demographics. but it's not a very serious problem because more poles will exist next generation then ever in history.
Poland