All you have to do is go to a City Council meeting and read the offending parts or display them.
If anyone doubts AppyPappy's advice, remember what happened when a certain actor (with the initials of Charlton Heston) read the lyrics of a nasty rapper at the Sony stockholder's meeting.
If you happen not to remember, here's a hint. The rapper's contract was cancelled.
"Out-ing" the bachelor's child that is responsible for such trash being on a library shelf thanks to tax payers dollars will be fun, too.