Here's an essay I read last year that argues that a black American can certainly be a bigot but not a racist. https://zora.medium.com/can-a-black-person-be-racist-a0e3ea9d3f15 The way Douglas Giles defines racism in his essay, it made sense to me. It seemed logical to me. Whether or not something logically follows is very dependent on the definitions in the chain. I'd be interested in your critique. In your example, it says "by this definition." So is the conclusion not logical or is it logical but you disagree with the definition used?