Ancient Aliens usually quickly skipped across that aspect but did have at least one which showed and described a long stone trench which they said allowed a small river of human blood to flow downward for yards, filled during human sacrifice ceremonies which were frequent. The show was honest at least those times.
Funny during the many years of the episodes, the “aliens” word came into controversy about people illegally crossing the borders. They switched to saying “extraterrestrials” but that word was a tongue twister for the affable wild haired Georgio Tsoukalos who struggled with “estertriestables” or “estrtyessables” or something.
Happy Indignant People’s Day