Fundamentals of Communism

Much of this reading will come across as a review for us.  At this point in the year, we should be very familiar with the tenets of communism.  After reading the excerpt from Karl Marx's Communist Manifesto (locations 17-19), consider how the communist ideology aligns with the political practice. To what extent did any ONE (Mao, Allende, Castro, Stalin, etc.) communist leader live up to Karl Marx's ideals?