To be frank, I do not want to get that book nor do I want my name to be in their system as somebody who is interested in that book. A search of their online catalogues through Tor was enough to confirm my suspicion that they would not have the book generally available. My understanding of how librarians think about and consider "banned books" comes from my interactions with a few librarians in my social circle; the search for the book was simply to illustrate my point with an example.

I just Googled what the book is and I don't blame you. Point is that libraries act as a network, and if you really want to check out a book, librarians tend to work with you to make it happen.

But really, more often, it comes down to budgeting and not taste or personal politics.