We tried this in the 1930s in Europe and it didn’t seem to go very well. See also it’s lasting legacy in the current Italian prime minister, Marine Le Pen’s popularity in France, and AfD’s electoral successes in Germany.
I agree, a bureaucracy banning books and reference material that ran counter to the approved narrative was quite disastrous. Hopefully we don’t repeat that mistake now that everyone is neatly siloed into digital echo chambers.
Personally, I think we did pretty well against the (specifically online) deluge of misinformation and fringe ideas for about a decade or so prior to ~2010. Unfortunately, the “problem” of internet free speech seems to have been solved and now we’re just waiting to see whether the censors or the reactionaries win and what type of fresh authoritarian hell awaits on the other side.
If you think these are the two camps, I recommend googling the words “Republican” and “book bans.”
I'd argue neither side has a stellar record today, but it's the other that's more speech stifling...
NSDAP were in power for over a decade before the first concentration camp was ever built. Their rhetoric in the 30s was not as direct and violent as their later actions, that doesn't mean they weren't still Nazis.
The first concentration camp, Nohra, opened in 1933, the year the Nazis took power. The more well known Dachau was also opened that year.
Dachau was a concentration camp located in a Munich suburb that a large number of prisoners survived (but a lot did not) and were even sometimes (but not often) released from. Really bad, but nothing that awful governments hadn’t done before - in fact, was being done by our eventual allies to the East at the same time.
Auschwitz was an extermination camp (Vernichtungslager), located in a distant corner of Poland that only a tiny fraction of people sent there survived. These camps and system were a new horror for the world, and the center of the Nuremberg war crimes trials. Those were planned at the beginning of 1941 (Wannsee Conference), so yes, put into operation about a decade after the Nazis came to power.
Some places that were initially set up as work (to death) camps were later turned into outright extermination camps.
The Beer Hall Putsch of 1923 was about as effective as the January 16 assault, and just as comically incompetent. But there was a lot of sympathy for the far-right terrorists among the German judiciary, just as there is today in the US. The prosecutors and judges who could have stopped the movement in its tracks instead chose to take it easy on the perpetrators, just like today.
Now we get to wait ten years to see where, or if, these two convergent timelines diverge.