I can buy Nazi paraphernalia today, read about Nazism on Wikipedia, purchase newly printed copies of Mein Kumpf, watch Hitler's speeches on Youtube, and more.
The ideals of Nazism were defeated by openly exposing, and combating them with freely available information.
Censorship would have been to pretend Nazism never happened, and banning of anything that might encroach upon "Right Think".
And think what would happen if someone made Nazism illegal? What would that mean? What about some new group that calls themselves Izan's, but shares all the same ideas of Nazism? Would that be illegal too?
You cannot ban ideas - someone else, at some point in time, will have the very same idea even if they do not know someone else had it first.
Instead, you must fight with logic and exposure - expose bad ideas for what they are, and prove them wrong with logic.
And funny enough, we Germans are usually hammered by the right for over working on our historical gilt. Especially by the German right wing.
Which is say one should be cautious about exercising rights if you want to keep them.
The parent post asserted the Allies propaganda campaign after the war was censorship - it's flatly not, particularly since everywhere else in the world you can freely call yourself a Nazi with no repercussions. At no point was it illegal anywhere outside Germany to possess a copy of Mein Kumpf, even if it was signed by Hitler himself.
I don't think outlawing Nazism in Germany was a good thing, nor productive. Nazism could be (and very successfully was) destroyed through exposing it's ideals for what they were.
We often forget there was a Nazi movement here in the US leading up to the war - that was also stamped out not by censorship, but through exposing the evils of the Nazi regime.