The righteous ideals prevailed in the end, in both examples you provided - no?

Nobody pretends Nazism never happened - that would be Censorship. Instead, you can buy, find, read about Nazism - including Mein Kumpf and more.

Creationism is not a dominating idea in the US either - nobody censored Creationism (even to this day you can find private schools that teach it!). Instead, Creationism was defeated by questioning it's teachings, and exposing it's logical flaws.

I do believe you have very eloquently proven my point. Censorship never works.