It makes me think about how difficult it is to define harassment or violence. Unique traditions shown on the news page are so hard and embarrassing for us.
(If you are a member of these tribes, it's inappropriate to use "us". Sorry.)
And, if we try to force adolescents to do the same thing, we will be punished. On the other hand, for these tribes, they are common and mandatory to become adults, even if it's embarrassing or horrible.
By the way, among these tribes, it's simple to define "adults", because of the coming of age ceremony.
But, for us, it's becoming ambiguous to define "adults" by experience.
Recently in Japan, men or women who haven't yet had sexual intercourse are made fool or seen as immature adults.
So, sex is a new coming of age ceremony?