exactly. just do it and be quiet.
get some allies to stealthily do it too.
make it a movement.
but an undercover one.
The issue with this is that checking out books will show up as statistics. “Oh! We have a LOT of ‘X’ books being checked out, so, we better buy more!”
Better to not check them out, but, to challenge them to a point where the Library Board gets involved. I can’t say for all library boards, but, the one I worked for did NOT want complains about what was in the library.