Although I share your anti-censorship sentiment, but I think you probably have an overly idealistic view on how book selection for public libraries works.
It's easy to make a long list of non-obscure books which you can be almost certain you won't find in your local public library.
FWIW, my own doesn't even have a subscription to a non-abridged version of a good online dictionary, but they have all of the books by Ibram X. Kendi (and multiple copies of some).
Swear I'm bout to start doing something similar if I don't see anyone else do it.