I have a simpler explanation, at least for most Marxist elites. Marxism provides a useful disguise for many leftists for a gnawing ambition to grasp as much State power as possible, which is at least as old as the pharaohs. Traditional morality is done away with: cooperating with the inevitable historical process, the ultimate triumph of Marxism, is moral, and anything that opposes it is immoral. Thus morality becomes a mere matter of political labels. How convenient that this has allowed movements dedicated to Marxism to commit any crime, no matter how vile, in the scramble for supreme power. That Marxism has never been anything but a transparent fraud, with no more intellectual validity than a tale from The Arabian Nights, is a damning indictment of the human capacity to embrace any fable if it gives an excuse to engage in wretched conduct with an ostensibly clean conscience.