A South Korean soldier forcibly cuts a young man’s hair in front of others during a nationwide crackdown on men with long hair and women wearing short skirts in South Korea – 1970s

This was during the Fourth Republic of South Korea. The President Park Chung-hee was declared dictator of South Korea for 18 years until he was assassinated and replaced in a coup-de-etat for about 3 years.

I’ll post some links about it:

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

https://en.wikipedia.org/wiki/Park_Chung-hee

https://en.wikipedia.org/wiki/Assassination_of_Park_Chung-hee