It is weird. She didn't write just "race is a pervasive concept" - she explicitly added "in the U.S." to it, singling out the U.S. despite her own experience telling her it's just as or more pervasive elsewhere.
I'm not explaining them to her, but to others. If the story had been about two assaults, one by a black man and one by a white man, and then she had singled out only one of them with "violence is pervasive in the black community", you would be perfectly capable of understanding the difference.
Yet make it about countries, and this kind of double-standard exceptionalism gets a pass.
