I've read Marx but I don't really participate in or seek out Marxist discussion. Outside of some imaginary global utopia, isn't state censorship required for a totalitarian state? Sub in any word you like for "totalitarian," that's the word that comes to my mind for a command economy.

Do you think the Soviet Union would have lasted as long as it did if the people were exposed to the full force of Western propaganda? Or inside criticism? The goal of the individual to capitalize was/is still great in communist countries. I don't understand how Marxism could sustain itself with capitalists given free reign of the press. Look at all the subtle ways advertisers propagandize.

Is your issue with censorship itself, or is it because corporations rather than government are choosing what to censor? Or would corporations be censored by the state, with politicians and individuals be free to speak their minds?