Recent quotes:

The lessons of the Russian revolution, 100 years later

You could, I suppose, try to pin some blame for later Stalinist atrocities on the Marxist labor theory of value, which asserts that all capitalist profit is in a sense stolen from workers. If that is true we should be on the lookout for a revolutionary vanguard of libertarians who think taxation is theft. But it is simply not the case that Marxism — an arid and over-elaborate doctrine, very interesting in some ways and clearly mistaken in others — is some turn-crank formula for purges and dictatorship.