Ignorance can also enable violence. [All it takes is one person...] And if you kept people from using the library because they cannot fulfill your requirements, then you are keeping people ignorant! [And that's the last thing she wants, as it's just repeating the situation back in her world.]

Besides, there's books in there that are read for entertainment purposes. Some even bedtime stories for children, and not allowing those books to be removed from the library practically defeats the purpose of those type of books existing in the first place!