I feel like one of those audience members yelling at the character in the horror movie to not go in the basement.
Racial purity is rearing its vile, ignorant, rationalizing head.
The book is in a fantasy genre series with a group of magical players traveling about and not completely unaware of some class and gender differences in their medieval-ish society.
But now there are stirrings of the "other" (impure, other race, mongrel) versus the "pure" with all the hate and violence and purging that leads to.
And the characters aren't seeing it. Bewildered and cluelessly not imagining where things could go.
Well, not yet. Headed there, I think, because a rival group already trying to sabotage them throughout the series is clearly on the racial purity side. Every red flag and clue I see, so far they are not getting.