 Everyone thinks in the 19th century, everyone listened to Stephen Foster and had parasols and went to church on Sundays. It was chaotic, even by our standards. And Huck Finn lets you see the chaos of our past, like few books do. I think that the important thing is that your students are trusted and that they're liberated to speak their minds and they're liberated to not be in the classroom in the first place if they don't want to be and to leave the classroom if they want to be.