Bernal Diaz, one of Cortez’ grunts, a soldier in the ranks, left a spectacular memoir of the conquest from the point of view of the common man.
He repeatedly implies, but deliberately does not detail outright, every sort of atrocity and unnatural sexual act the Indian priests got up to in their temples. And this was a man well used to extreme violence.
The Aztecs murdered their victims and sometimes danced around in their skins afterwards.
Not like any of our elites would ever do, of course.
(same god being worshipped, though...)