You know why Dr. Seuss wrote some bigoted stuff? Because he lived in 1937. He also wrote wonderful things like The Lorax - conservatives, make sure you read that to your kids! Back then, bigotry was unfortunately normal. We don't hate him for it, we just don't want to repeat it.

And Yurtle the Turtle!

I can tell that from memory. We had a summer camp, dad would often do that one for sunday "services", as the "Sermon" That was in my head a lot, the last 4 years.