Over the last twenty years, Stephen P. Halbrooks scholarly work on gun control has become more polished, nuanced, and methodical. His latest book, Gun Control in the Third Reich: Disarming the Jews and Enemies of the State, is an astonishing piece of scholarship: complete, careful, and thoughtful. For a very long time, Americans opposed to gun control have used the example of Nazi Germanys gun control laws as a warning of what might happen here.