When a librarian really believes that a book is harmful, that its content is contrary to the welfare of the community, or that it is destructive of good taste, even if those are his opinions only, he has not only the right, but also the obligation to do what he properly can to keep that book out of the hand of those whom he thinks might be injured by it.

When a librarian really believes that a book is harmful, that its content is contrary to the welfare of the community, or that it is destructive of good taste, even if those are his opinions only, he has not only the right, but also the obligation to do what he properly can to keep that book out of the hand of those whom he thinks might be injured by it.

Shera's Two Laws of Cataloging: Law #1, No cataloger will accept the work of any other cataloger. Law #2: No cataloger will accept his/her own work six months after the cataloging.