It does go into the subject of blacks being "cursed".
OTOH, I know many "swarthy" Mormons - several Brasilians, too. You'd think it might upset them should this be presented in this manner.
You assume much here, like that these people are being told the truth about mormonISM. They are not very truthful about the foundation of mormonISM, all you have to do is talk to a mormon to learn that.