Banning a book in a school district still signifies a form of authoritarianism. If someone is prevented from reading Maus[0] (or finding out they are in a cult, or a victim of domestic abuse), what is the effective difference to them between an authoritarian censoring it at the national level or the local one?
[0]: https://www.pbs.org/newshour/arts/holocaust-novel-maus-banne...