Answer:
Lenin added the concept that the road to communism did not need to wait for the creation of a proletariat of exploited workers to rise up and seize the means of production. He believed that a properly coordinated centralized group of professional revolutionaries could do so politically and this is exactly what he and the Bolsheviks did in the October Revolution of 1917. The so-called Communist Revolution was not one that Marx had originally envisioned.