The book burning of the Nazis?
https://en.wikipedia.org/wiki/Nazi_book_burnings

The burning down of the library of Alexandria?
https://en.wikipedia.org/wiki/Library_of_Alexandria

All efforts to stop the enlightenment.
What we see today with the bans and censorship is nothing different.

But how do you shut down the Internet?
How do you stop information in a world where there are no barriers anymore?

How do you transport the people who are already on the surface back to the cave? (Plato)