Should Huckleberry Finn be taught in school?

In my opinion I feel as though Huckleberry Finn should be taught in school to inform students about how people used to talk back in the days and how they were not as smart as the generation today. The book says a lot of racist words and uses profanity but overall the book is good to read. We can now get a vision on how the past was and how uneducated they were.