For what it's worth, the bit about Nazi Germany isn't true. Hitler and the Nazis were very much in favor of German civilians owning guns. Of course, they didn't want Jews and other minorities to have them, but they were very supportive of ethnic Germans owning firearms. In fact once they were in power they specifically removed some Weimar-era gun control laws.
During the Weimar Republic, German civilians were not allowed to have guns, due to the Treaty of Versailles, so in this context the Nazis being against gun control can be viewed in the context of them generally remilitarizing German society and flouting the rules of the treaty.
Sorry, we don't allow throughout history questions. These tend to produce threads which are collections of trivia, not the in-depth discussions about a particular topic we're looking for. If you have a specific question about a historical event or period or person, please feel free to re-compose your question and submit it again. Alternatively, questions of this type can be directed to more appropriate subreddits, such as /r/history or /r/askhistory.