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My thoughts. I don't know if you're well travelled and have first hand experience of such places, but I have, including Communist Russia (when it was Communist Russia, of course), and in my experience under these regimes there is no freedom of speech whatsoever - in fact people look over their shoulders before advancing an opinion. The working people - the vast majority - are poor and living on low wages and in dire conditions, often without running water and with little or no electricity, and although education and health care is free, it is often difficult for people to receive the medical treatment they need without offering a hefty bribe to the doctor. The shops offer little or no choice, people often wait for years with their names on lists for a home telephone or a car - that's if they can afford such luxuries - and there is no opportunity for anyone to improve his situation by taking the initiative and entering into private enterprise, unless they do it illegally, so poverty is the norm. All systems are corrupt to a degree - whatever their colour - but none more so than Socialist/Communist systems, since they really do keep the population poor. Despite what they would have us believe, there is no distribution of wealth - wealthy, privileged and powerful people are still wealthy, privileged and powerful.
Fortunately the world is swiftly changing because quite simply, these systems do not work - greedy human nature sees to that. And think about it. If such systems of government are so wonderful, why do people living under them want so desperately to change them, or indeed, to escape to capitalist countries the moment the opportunity arises?
It's easy for those living in the comfortable, capitalist west to idealise, but remove the rose-coloured spectacles and have a good and honest look around the world, and my bet is that given a choice of domicile, they'd stay right where they are.