Great post. What did the Native American leaders say about the idea of cannibalism? This is touted about over various peoples and there is little evidence that it exists in reality, beyond human sacrifices of some ancient peoples. More missionaries should have been stewed.
G-d pulled a grandstand to show us human sacrifice is not wanted.
It is postulated climatic change forced the ancient pueblo to abandon their cliff cities. Crop failure, disappearance of game, and interminable drought could have lead to the big C-eat. Can be considered acceptable for survival.
In terms of our own culture, Soylent Green is right around the corner.
SHAMELESS PLUG: Check out my scifi on Medium and Amazon. Upcoming novella, “Resurrection,” two chapter preview on my series. Will address the issue.