Worth noting, this only cover new bans in 2020. > The ALA Office for Intellectual Freedom tracked 156 challenges to library, school, and university materials a

Worth noting, this only cover new bans in 2020. > The ALA Office for Intellectual Freedom tracked 156 challenges to library, school, and university materials and services in 2020. So you really have two categories of books. 1) New books which had widespread media coverage in 2020, which someone considered controversial. (Most of the books on the list) 2) Old Books which were considered classics but are now being challenged because of changing societal norms. (Of Mice and Men, To Kill a Mockingbird)