Like its progenitor, capitalism, fascism is totally opposed to socialism. Fascist Germany and Italy attacked both the other capitalist states and the Soviet Union, which was still the only socialist state in the world by 1939. The defeat of fascism was therefore a victory for socialism, and at the same time it preserved the other capitalist nations from having to take the historically retrograde step of fascism.

p. 310. - How Europe Underdeveloped Africa (1972)