Over the course of history, various groups have challenged, banned, and burned texts out of fear and the desire to control the thoughts and beliefs of a populace. Dictatorial regimes such as Hitler's Nazi-controlled Germany used "bonfires [to] 'cleanse' the German spirit of the 'un-German' influence of communist, pacifist, and, above all, Jewish thought" (Merveldt 524). Modern religious fundamentalism seeks to control a populace either through fear and indoctrination like the ultra-conservative, nearly-literal witch hunt of J.K. Rowling's "Harry Potter" series when religious leaders of various Protestant denominations feared that the hit young adult book series would teach impressionable minds actual witchcraft. One of the most famous and still frequently taught banned books is Mark Twain's "The Adventures of Huckleberry Finn." In this paper the argument is made for the teaching of banned books by a case-analysis of Twain's text that considers the historical context, positive and negative aspects of the text, the harm of censorship, the value of free speech, and how frequently-challenged texts promote critical thinking for students.