What history has really taught us is that no change of any sort can take place when one stands with the status quo.  All positive (and, unfortunately, negative) change comes with effort, with at least some degree of organized action, of changes in public attitude and perception.  With the Nazi regime that you cite, resistance was dealt with by immediate death, but it survived and grew as an "underground" movement, yes?  And, if I am correct in my study of history, Hitler and his group certainly were overthrown and he died hiding and cowering in a bunker.  Your final sentence is so "empty" of thought, I can't believe the lack of logic.  But to offer some clarification, the point is that they came for homosexuals, they also came for the disabled, the immigrants, the Jews, the foreigners, the Catholics especially clergy and religious - all of those who did not fit in to their vision of a "pure" society or who opposed them.  If you pick up a world history book, you will find it all there.