Surely not all librarians are socialists, but e.g. this one appears to be of the more fact-resistant kind, and comes up with repeatedly different and increasingly funny explanations for why the library shouldn't get a bestseller book. The latest one is "it's not fact-checked", as if the other books in the library (like the mentioned Mein Kampf) were.

Of course - I'm generalizing. My point is that the opinion of librarians aren't representative of the public discourse.