Monsters: A Fan's Dilemma

This is something I have spend a great deal of time thinking about. As a childrens' librarian in a period when kid's book authors were being cancelled left and right (Dr. Seuss's racism, Laura Ingalls Wilder's racism, etc). I mean how do I tell a kid who just adores Harry Potter that the twat who wrote it is loud and proud with her hate?
I did not expect miracles with this book, instead it's more of a conversation. There's a history here, there are causes, and there is an idea of how to be about it. It does not have all of the answers, but I did not expect it to. I appreciated it, though.
Now someone please write a book about Americans and their very short memories, because the Cat in the Hat is still the mascot for Read Across America and everyone seems to have forgiven Book of the Month Club for only ever promoting white authors.