I'm not sure how or whether you are distinguishing Marxists from communists, but every marxist/comm. regime I know of is responsible for providing education, healthcare, and social support for everyone. One reason why ex-communist states are such juicy investment deals is because of the very high skill level of the population. One reason why life expectancy in the former SU declined by about 15 years (!!!) is because these services were taken away.
I do not disagree that the nomenclatura gathers many privileges for itself, but compare that with the privileges of western billionaires...and have a good laugh. I am by no means pleading for the wonderfulness of existing (dictatorial) communist regimes; but to say that they did nothing for workers is ridiculous.
Joanna