The contrast between freedom and civilization permeates the novel, and Huck's struggle for natural freedom (freedom from society) mirrors the more important struggle of Jim, who struggles for social freedom (freedom within the society). Both Huck and Jim search for freedom during their adventure down the Mississippi, and both find that civilization presents a large obstacle to obtaining their dream. From the beginning, readers realize that civilization is filled with certain hypocrisies, including religion and the practice of slavery.
Huck's candid narration gives Twain the opportunity to make barbed comments about literary and social institutions of the nineteenth century. The barbed comments range from his literary aversion to the novels of authors such as James Fenimore Cooper (Last of the Mohicans) to overt religious hypocrisies such as the Christian acceptance of slavery in his boyhood town.
The historical realities of slavery and racial division are, without doubt, the most important and most controversial elements in Huck Finn. Imbedded in the contrast between freedom and civilization is the issue of slavery, and the inclusion of the pejorative slang term "niggars" in the first chapter prepares readers for the similar coarse language that will follow. In order to depict the region and the attitude in a realistic manner, Twain makes a conscious choice not to edit regional bigotry and the language that accompanies it.
