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The University of Zurich team observed a group of bonobos from a project by local biologists that had habituated the animals over 10 to 15 years, depending on the group.

“We had three or four habituated bears that were constantly here in town,” said Fisher.

It is not merely that people surrender to authoritarianism, but that they are fashioned by it, habituated to its violence, until resistance feels futile and complicity feels natural.

To others, it illustrates the problem of wild animals becoming habituated to interacting with humans.

Taking care to not stress the animals or get too close, the researchers followed the monkeys, which are habituated to human presence, until they urinated.