Dirty Cowboy & Sylvester and the Magic Pebble

Written by Amy Timberlake
Illustrated by Adam Rex
(Farrar, Straus and Giroux, 2003)

In April 2012, the Annville-Cleona School Board in Lebanon, PA, voted 8-0 to remove the book from its elementary schools after a student's parents objected to some of the book's illustrations. There is no objection to the story itself but rather the illustrations may lead children to think "that looking at nudity is OK, and therefore pornography is OK."
Written and illustrated by William Steig
(Simon & Schuster, 1969)

In 1977, the Illinois Police Association objected to the portryal of police officers as pigs. On the 1960s and 1970s, "the pigs" was a derogatory term used to describe the police force.