One of the continuing puzzles of twentieth-century history is how Germany moved from a kind of anti-Semitism that was despicable, but did not seem exceedingly dangerous, to the Final Solution. This is a question that has been debated in recent years by historians who have come up with very different answers. In Nazi Anti-Semitism, Philippe Burrin, one of the leading historians of Nazi Germany, offers a new understanding of the evolution of Nazi thought and policy.