The psychology back of the ""strategy of terror"", a study of psychical violence based on the findings of Pavlov and demonstrating that political action is a form of biological behaviour. This is more scientific in approach than the Taylor book, but will take the edge off its popular appeal. Chakotin shows how Hitler has capitalized instincts for collective action, and by constant discipline has conditioned his a people to violence, through symbolism, has made the system omnipotent. The psychology of the movement is balanced with the history. Interesting study for intelectuals.