The problem is that Karl Marx's beliefs are reflected in Karl Marx's own writing, "The abolition of religion as the illusory happiness of the people is the demand for their real happiness. To call on them to give up their illusions about their condition is to call on them to give up a condition that requires illusions. The criticism of religion is, therefore, in embryo, the criticism of that vale of tears of which religion is the halo."
And that is exactly what each country that has ever sought to fully implement Marxism, in my understanding, has set out to do. State atheism is the vehicle that was used and it resulted in the democide of 262 million people last century. This number does not include the maimed, the injured, the displaced that survived, those committed to the gulag that survived, those committed to mental institutions that survived (everyone that believes in God must be crazy according to the state atheist) nor does it take into account the children torn from Christian parents and put into state run orphanages. Then there is the great destruction of historical artifacts and cathedrals simply because they were religious.
Karl Marx was an atheist who believed in no ultimate morality beyond the state. He taught the abolition of religion because he didn't believe in it and felt it dulled people's production in this life. To date, I am not aware of Marxists ever achieving power and restricting their implementation of Marxism strictly to economics as seen in Democratic socialism which seeks to establish an economy based on economic democracy by and for the working class opposing centralism and the revolutionary vanguard party of Leninism.
My reading of Democratic socialism is that though considerable ground is shared with Marxists and Communists on economic and social issues, they are not the same thing and never have been. For example, they've never advocated the persecution of religious people simply for being religious or been supportive of political terror in the form of secret police organs or gulags; however, they have been very liberal socially advocating abortion on demand, hate legislation/anti-free speech laws, support homosexuality and feminism, a desire to restrict religion, etc...
Not many Christians want to get behind increasing goverment authoritarianism and less personal liberty in the areas of speech and religion while promoting homosexuality and what Christians view as modern "radical feminism."
It's a tough row to hoe. Here you have Karl Marx calling for the abolition of religion by whatever means are most efficient, as an atheist, and his committed followers attempting to do exactly that wreaking massive human suffering on one hand.
On the other hand, in order to have a humane society you need to implement some socialism. Let's be honest, any government-owned, -funded, or -subsidized operation is a socialist program including publicly owned airports, sports arenas or government-funded universities, to Social Security and Medicare to Medi-Cal and now healthcare. These have been very desirable and helped a great many people that would have suffered terribly and died without them. It's easy to see how they have stabilized society (Note: the problems with social security are a result of blatent mismangement by politicians voting to rob the funds and never pay them back. They are not a result of the programs themselves).
But back to the point, how do you tell Marxists not to implement Marxism... but only parts of it. It's like telling a Muslim to forget most of what Mohammad had to say in the Koran and implementing the rest. Very hard to do. Study binary opposition in sociology. People are just naturally inclined to transcendentalize beliefs and resulting systems.
Of course if Karl Marx had been a Christian, we wouldn't even be having this discussion. All would be well for the Christian socialist. State atheism would never have been coupled with Marx's economic ideas and sexual immorality never championed as "liberation."
*sigh*
But that certainly was not and is not the case though I admit that one party communist countries like China have developed a toleration of democracy (local voting) and religion over the past few decades. But as a one party authoritarian government, they could simply reverse those policies and crush any dissidence that resulted using their military, law enforcement, and secret police organs. They've done it before.
So we have this utopian idea of a Christian socialism (utopian to the Christian that is) which has scriptural support
http://www.openbible.info/topics/socialism though admittedly simply arguing that socialist values work in any society and system including capitalism might be more on point from a Biblical view. But the Bible gets used as a propaganda tool for Christian socialism and then tossed away for the writings of the anti-religious atheist Karl Marx when it comes time to implement it.
What do you think? I'd like to hear from you.