Sure Trump got elected, but so did Hitler. The difference is in the US system, Trump was constrained by two other co-equal branches, and a system responsible for the change of power at the conclusion of his term that Trump couldn't corrupt. Meanwhile in pre-war Germany, Hitler won election and used his ability to play to the crowd to do away with any constraints or system to replace him. In a nutshell, that is the difference between a democracy and a republic. In a democracy, those having popular opinion on their side can do anything. In a republic, even those having popular opinion on their side are still constrained by superseding structures. Democracy isn't about voting. Democracy is about what having popular support will allow you to do.