Social prejudice, war, depression, revolution or death are all considered erroneously to be pathological. There is an individual psychopathology which is put in the service of the social reaction. The emotional origin of social prejudice leads to the assumption of a common source. Anti-semitism, anti-catholicism and anti-negro prejudices are described. The hatred and aggression of man as a member of a herd is always available. There is a conflict in man that he may be separated from the herd or lost in the herd. This provides a basic anxiety which utilizes projection.