One of the books specifically cited is The 1619 Project, which if I am not mistaken was widely criticized even by professors for being a narrowsighted and completely ahistorical look at slavery in America.
The book shouldn't be censored, but it isn't "history" any more than intelligent design is "science".
I suppose a public library maybe should have it, but it belongs on a shelf with the "The Protocols of the Elders of Zion", the works of Lysenko and the tracts of the Flat Earth Society.
It doesn't belong within a hundred yards of a school.
This goes far beyond all but the most partisan criticism I've read about the project, and even partisans are mad about the project issuing "silent" corrections without notice so your understanding may be outdated. Regardless, I think that some nuance is warranted here and it sounds like the librarians at BPL agree.