I have no idea about what the book says or the people where you work, but rather your comment about "white people [being] horrible things".

Considering you live in a country from where white culture is most dominant, why would they have to include it, also considering most of the nurses that are being targeted/trained from the book are white, as you said? Why would they have to learn it?

But anyway, I don't mean any offense, but I don't see where you're getting the "white people are horrible" thing. White supremacy and white privilege aren't the same thing.