The ritual is done at least 20 times, with months or years between each session, taking 10 to 30 minutes. The ones that pass through it all are accepted as warriors and future leaders
https://pib.socioambiental.org/en/Povo:Sateré_Mawé
https://en.wikipedia.org/wiki/Mawé_people
https://en.wikipedia.org/wiki/Paraponera_clavata (bullet ant)
The road to hell is paved with good intentions. Many people do fucked up things to others believing it’s in their best interest. Still doesn’t excuse it.