> So I would say Hitler and Germany is a lesson in how not to set up a democracy. It basically enabled his rise to power.
And indeed, constitutions and electoral systems took these lessons into account afterwards. Nowadays it is hard to win an election with 1/3 of the vote:
Yes there are instances where it wasn't above board but by and large Hitler gained his power democratically and/or within the constitution.
So I would say Hitler and Germany is a lesson in how not to set up a democracy. It basically enabled his rise to power.