I want to add that this:

"As a result of this book, there are lots of people out there who think that the Salem witches were in fact witches and deserved to die."

is ridiculous. Because of this book, a lot of people believe witchcraft is real? That's just laughable. There might be a minority of the population (not "a lot people") who believe witchcraft is real but among that minority, I highly doubt most of them came to that conclusion by reading this book. Those who have are probably so small in numbers and lacking any rational thought that they frankly just don't matter. Do you also want Harry Potter to have a disclaimer making it clear that the witchcraft in it isn't real?