Edited sentence: As mere examples, after the failures of the European liberal revolutions of 1848, the journalist and political philosopher Karl Marx advocated violent revolution to overthrow the existing political order which he pointed out was dominated by lingering feudal overlords and the bourgeoise, claiming it such revolutions would usher in a dictatorship of the proletariat (a mathematical impossibility) followed by a state of universally equal, materially comfortable and benign free society he called communism with the withering away of the institution of the state, though he never was specific about how it would work, saying that would be left to "recipes of the cook-shops of the future.He neglected in particular to describe how his dictatorship of the proletariat, which he claimed as a "scientific" certainty, would carry out the vastly complicated economic calculations of demand, production and supply of an entire society, of which not even the computer technology of any nation has to date delivered, nor how it would motivate not just its proletariat to work, but also its discoverers, inventors and managers of any society that claims the power to deliver material comfort.Marx's principal ideological manifestations were the Paris Commune of 1870 and the Russian Bolshevik Revolution, each of which gave birth not to benign but rather despotic regimes with rule of new elites widely abrogating civil and political rights, and the second of which gave rise to starvation murders, kidnapings, torture and political imprisonments on a mass scale.Stalin was the ultimate implementer of the despotic and destructive potential of the Soviet Union which grew out of the Bolshevik Revolution, all the while justifying it in the name of elimination of "class enemies", "wreckers" and other fraudulently-named large and arbitrary categories of persons, and claiming that the state he ruled conducting these actions was necessary for economic development, during such time using a legally-enforced enforced hero-cult of his personality celebrated in every artistic medium under the state's control.While left-wing writers like to cite only right-wing demagogues, left-wing demagogues equally abound