This remarkable and almost inconceivably painful narrative comes from that single individual.
Here is a brief excerpt, from Voluntary Xchange. Do not visit the link and read more if you are at all depressed. On the other hand, you should know this:
One day in June 1989, Shin's teacher, a guard who wore a uniform and a pistol on his hip, sprang a surprise search of the six-year-olds. When it was over, he held five kernels of corn. They all belonged to a slight girl Shin remembers as exceptionally pretty. The teacher ordered the girl to the front of the class and told her to kneel. Swinging his wooden pointer, he struck her on the head again and again. As Shin and his classmates watched in silence, lumps puffed up on her skull, blood leaked from her nose and she toppled over on to the concrete floor. Shin and his classmates carried her home. Later that night, she died.
On a hillside near Shin's school, a slogan was posted: "All according to the rules and regulations." The boy memorised the camp's 10 rules, and can still recite them by heart. Subsection three of Camp 14's third rule said, "Anyone who steals or conceals any foodstuffs will be shot immediately." Shin thought the girl's punishment was just. The same man continued to teach Shin. In breaks, he allowed students to play rock, paper, scissors. On Saturdays, he would sometimes grant children an hour to pick lice out of each other's hair.