How does communism relate to popular sovereignty?

Popular sovereignty is the principle that the authority of a state and its government are created and sustained by the consent of its people, through their elected representatives (rule by the people), who are the source of all political power. It is closely associated with social contract philosophers such as Thomas Hobbes, John Locke and Jean-Jacques Rousseau. Popular sovereignty expresses a concept, and does not necessarily reflect or describe a political reality. Benjamin Franklin expressed the concept when he wrote, "In free governments, the rulers are the servants and the people their superiors and sovereigns".

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the crusaders are identified in the painting;

c. by the red crosses on their backs