From Cuban Exile Quarter:

The first leader of the Soviet Union, Vladimir Lenin on October 2, 1920 in a speech to Russian communist youth stated:  “The class struggle is continuing and it is our task to subordinate all interests to that struggle. Our communist morality is also subordinated to that task. We say: morality is what serves to destroy the old exploiting society and to unite all the working people around the proletariat, which is building up a new, communist society.” This is at the heart of communist morality, the ends justify the means, a profound immorality and a pillar of international communism.