Answer:
In The Adventures of Huckleberry Finn, the author uses the character of Colonel Sherburn to express the concept of the hypocrisy of mob mentality and vigilantism.
In the novel, Colonel Sherburn is a wealthy and respected member of the community who kills a man in self-defense. A mob forms and threatens to lynch him, but he confronts them and gives a speech that exposes their cowardice and hypocrisy. He points out that they are willing to kill him without a fair trial, but would never risk their lives for a good cause. He also highlights their herd mentality and willingness to follow any leader who promises them excitement or revenge, without thinking critically or considering the consequences of their actions.
Through Colonel Sherburn's character, Mark Twain criticizes the mob mentality and vigilantism that were prevalent in the American South during the 19th century. He highlights the dangers of blind obedience and the importance of individual thought and action in the pursuit of justice and morality.