This is Ok, but we need to change Huck Finn?

How bizarre is it that this is considered art, but Huck Finn has to be sanitized?  The book was written to prove a point, that racism can be overcome.  That is a story that needs to be told.  We need to stop white washing our history for our children.  Racism in the late 19th century was pretty much the norm, that is not saying that it is OK, but it was the times.  Children need to hear the story of what happened in this country in the days of slavery and the aftermath of it.  We will never overcome these things if we don't have honest discussions about them.  There is no historical evidence to say that Mark Twain was a racist, he was telling a story and chose words and characters that best fit the narrative he was trying to weave.  Why can't we just leave it at that. 

Craziness!!