For educated and tolerant Westerners, it is extremely difficult to imagine the dangerous power that anti-Semitism has enjoyed in modern Europe and impossible to grasp how it could have led to the unique horrors of the Holocaust. To study the origins and history of anti-Semitism by itself helps little. To fully grasp the dangerous potential of racism we must also know the relationships between the fantasies of the anti-Semites and the long-term historical...