Three generations of punishment

"The internment camps operate under a 'guilt-by-association' system (yeon-jwa-je), which means that extended family members of the accused – for up to three generations – are also punished. This punishment-by-lineage system exploits the significance of familial bonds and personal sacrifice within Korean culture, and empowers Kim Jong Il’s regime to persecute by birthright and to exert discipline and control through fear of such persecution."

- North Korea Now

Image source here.