Some are inducted into the secret societies common in Sierra Leone, many of which involve ritual cannibalism.

ECONOMIST: The darkest corner of Africa

Yet there have existed moralities in which cannibalism, ritual mutilation, slavery, and rape count as morally permissible.

FORBES: Morality: Nature or Culture?

Similarly, the discovery of butchered children's bones suggested that the Minoans far from being utterly peace loving practised ritual human sacrifice and cannibalism.

ECONOMIST: Bullshot