My thinking is that you cannot condemn a book unless you have read every word. And, children can learn that they shouldn't use that language- what is the bigger issue in the book? (As in "Go Ask Alice")
Books that have been challenged in Canada:
"The Diviners" by Margaret Lawrence
"The Book of Negroes" by Lawrence Hill
"Three Wishes" by Deborah Ellis
"Underground to Canada" by Barbara Smucker
"The Apprenticeship of Duddy Kravitz" by Mordecai Richler
"Lives of Girls and Women" by Alice Munro
"When Everything Feels Like the Movies" by Raziel Reid
"Essex County" by Jeff Lemire
"The Wars" by Timothy Findley
"This One Summer" by Mariko Tamaki
"The Handmaid's Tale" by Margaret Atwood
I have read seven of those books and all I can say is that "When Everyone Feels Like the Movies" was one of the worst books that I have ever read, but other readers feel that it has a message for the youth of today. So be it!
I wish I had something profound to say about banning books, but I don't. I realize that it is a slippery slope, so let's appreciate our "Freedom to read"!