Communism as a political movement attained global importance after the Bolsheviks toppled the Russian Czar in 1917. After that time the works of Karl Marx and Frederick Engels, especially the influential Communist Manifesto (1848), enjoyed an international audience. The world was to learn a new political vocabulary peppered with "socialism," "capitalism," "the working class," "the bourgeoisie," "labor theory of value," "alienation," "economic determinism,"...