Ri Dong Yol, a 74-year-old ethnic Korean living in Japan, remembers an autumn day more than six decades ago when dozens of policemen suddenly arrived in trucks in front of his school.
The policemen marched into the school in the midst of a class and started to take away its desks, chairs and other equipment, Ri said.
"So I resisted against them by clinging to a leg (of a policeman) while suppressing my fears, but it was useless." The school was closed down overnight.