Why were Shin and his family in the camp? Can you elaborate on the reasoning behind their imprisonment?

Why did Shin hate his family so much? Do you find his mindset understandable? How did his feelings towards them develop in subsequent years?

Some prisoners in North Korea’s labor camps had previously lived in the outside world. Others, such as Shin, were born in the camps. What impact could these different circumstances have on prisoners? What are the respective advantages to having been born inside or outside the camp??