We're officially becoming the last literary blog to link to the nifty new Google map that posts when and where every book challenge has taken place over the past two years. As Galleycat noted at the end of August, there's no red/blue state divide when it comes to this issue.
The closest challenge to the BookPage offices was in Murfreesboro, TN, where Peter and Iona Archibald Opie's I Saw Esau: The Schoolchild's Pocket Book was challenged at the Cedar Grove Elementary School in 2007. Someone complained that the book's illustrations were "absolutely offensive in every way," though it sounds pretty harmless to me. According to the site, the book is a collection of schoolyard jokes, riddles, insults and jump-rope rhymes illustrated by Maurice Sendak.
How about your home state?