I recall when Jordan Peterson was on Joe Rogan’s podcast one time he mentioned a tribe in Papua New Guinea where, people believed that the closer a person was to you- ie, a blood relation, the more black magical power that person had over you, which leads to some harsh social distancing.
I used to live with a bunch of guys from that part of the world- all of them utterly hate black magic. Real or not, the social effects that the belief has are real.
One of these islanders told me he “loves colonialism and the missionaries” for getting rid of that stuff. You won’t hear that at university,