Portugal, 1933 - 1974.
I belong to the first generation growing up as a child after the dictorship ended, thus like many people around the world in similar circustances, I do happen to have a close relation to what it means, and stand by the revolution cries "25 April forever, fascism never again", that unfortunely many in voting age have no clue what it actually means in practice, hence we have our own issues coming to our shores with Chega party.
Trying to work out which country you're referring to - Spain? Portugal? East Germany?
> laws imposed by the Allied did nothing to prevent what happened in East Germany and Stasi deeds after that law came to be
Well, yes, I should probably have clarified West Germany, a different country from East Germany, due to the Soviet control at the end of WW2. I suppose the point is that no legal order withstands overwhelming force in the end.