It's not that clever; they control all the information and ideas that a significant fraction of the population are exposed to, it'd be surprising if they didn't manage to paint themselves in a positive light.
[1] The bar to be called that can be as low or high as needed. Book publishers, online stores, credit cards, and social media platforms banning a person can be just "freedom of association", but not giving government support to a work by placing it in school libraries is censorship. You can take a guess at how many books that Amazon won't sell are on school library shelves. Yet that's not censorship.
Everybody. https://en.wikipedia.org/wiki/List_of_book-burning_incidents...
There are instances of books being burned for pragmatic, non-ideological reasons. But generally, reactionary ideology seems to top the charts.
Literally all of the examples in #Cold_War_era_and_1990s either were explicitly ideological, or seem plausibly likely to have been ideological, and the latter are all along the lines of "Well, they might have had a personal grudge against the author." or "We don't have any idea why they commited arson against a library.". Do you have any specific examples of attempted curtailment of a non-ideological issue? (No, "but our ideology is RIGHT!" doesn't count; denying people that shortcut is more or less the point of free speech.)
Up is down. 2 + 2 = 5.