“The Berlin Wall, retrospectively signifying the imprisonment of a population presume desirous of escaping Soviet domination, was originally conceived as a protective cordon around a fragile new society, a society based on work, cooperation, and egalitarianism, rather than individualism, competition, and hierarchy. The architects of the new Communist society believed the laboratory of social and psychological experiments out of which it would be born required insulation from a corrupting and decadent outside.”