Thanks, this is useful.
> "any action taken against a book based on its content and as a result of parent or community challenges, administrative decisions, or in response to direct or threatened action by lawmakers or other governmental officials, that leads to a book being either completely removed from availability to students, or where access to a book is restricted or diminished."
Though this is a fascinating definition.. anytime, anywhere says "no thanks" to carrying a book outside of purely budgetary or physical space limits, it is now a "ban".
The more fascinating question would be discovering the boundary of what PEN, et al consider a "good ban" because I bet we could come up with a few.
> anytime, anywhere says "no thanks" to carrying a book
That's not what the definition you just quoted says. In fact, the definition you quoted is very close to the common definition of "ban": a refusal to allow something, usually by an official entity.
It matters a lot who does it.