This is a looooong distance bashing of Darwin.
Whether you understand TToE or not, it is a further jump to say that racism is based on it than to say Nazism was a result of it.
It just doesn’t follow. Like with any science, TToE — and all sciences — can be used for good or evil.
I truly believe that Darwinism is inherently racist whether it is true or not. Of course, I don’t believe it is true, which makes it all the worse. But even if it were true, some races would have to be lower or less evolved than other races by definition.