The Adventures of Huckleberry Finn — Mark Twain

Mark Twain's novel, first banned in 1885 immediately upon publication by a Massachusetts library committee as "trash suitable only for the slums," remains among the most challenged books in American schools due to its extensive use of the N-word. The book's deep anti-racism — its depiction of Huck's moral growth in recognising the humanity of the enslaved Jim — makes the controversy particularly complex and instructive.