It is a frightening thought that man also has a shadow side to him, consisting not just of little weaknesses - and foibles, but of a positively demonic dynamism. The individual seldom knows anything of this; to him, as an individual, it is incredible that he should ever in any circumstances go beyond himself. But let these harmless creatures form a mass, and there emerges a raging monster. / Carl Jung, 'On the Psychology of the Unconscious'