[musicale]

> by conservative parts of society

And likely other parts of society as well:

https://en.wikipedia.org/wiki/List_of_most_commonly_challeng...

I expect many books are on the radar of would-be opponents because they are either a) revered classics that are often part of school reading lists, or b) books that are popular. Though I can understand wanting to restrict books with instructions for harming others or oneself (even if such information is readily available on the internet.) I can also see why many revered but subversive children's books might be opposed (but of course that's what makes them so great!)

My take is that the greatest threat to public (and university) libraries (along with budget and hour reductions, a general decline in reading, etc.) is copyright law, which currently does not permit a first sale doctrine for ebooks or non-physical digital media and generally stands in the way of building practical and sustainable digital library collections. Innovations such as scanning printed collections and making them available remotely as ebooks or audiobooks, or making music or video collections available remotely, are also prohibited.