We’d hope the library would have a backbone and encourage people not to be scared of ideas or information that may contradict the standards of the majority. Some libraries may fold, not able to withstand the consequences of going against the loud protests of its constituents.
Further, the best way to counter ideas that we disagree with is to have a fact-based opposing document. If you disagree with a communist manifesto, write a book supporting capitalism or trashing communism. Write a negative review of a book. Protest peacefully – not one’s right or access to read the book – but against the views stated in the book.
For books – all books – in order to support their power to help us discover and see the truth we must allow all books to exist and to have access to the shelves of our soul.