Grants anyone the ability to use the n-word as long as the person saying it was quoting a sentence which uses the n-word. Based on the book "To Kill a Mockingbird" in which the n-word would be quoted by any student reading the book to the class and not necessarily used in a hateful manner. This also applies to singing songs.
Student: Teacher! He said a bad word!
Teacher: He was just reading the book, why would I punish him? The Mockingbird Clause absolves him of any wrongdoing.