What is Hazing?

Hazing is the practice of rituals and other activities involving harassment, abuse or humiliation used as a way of initiating a person into a group.

Hazing is seen in many different types of social groups, including gangs, sports teams, schools, military units, and fraternities and sororities. The initiation rites can range from relatively benign pranks, to protracted patterns of behavior that rise to the level of abuse or criminal misconduct. Hazing is often prohibited by law and may comprise either physical or psychological abuse. It may also include nudity and/or sexually based offences.

https://en.wikipedia.org/wiki/Hazing

Example of hazing in the military: