3 ideas
In 1946 North Korea, Pak Hun, a gentle landowner's son who runs a village night school, watches Communist land reform turn his neighbors against him. Tosop, his family's longtime overseer, becomes one of his fiercest accusers, and the villagers who owed the family their livelihoods denounce it at mass meetings. The case shows that benevolent personal conduct gives no protection once a person's class position has been politically redefined as guilt.
Those most closely tied to the old order have the most to prove under a new regime, so they become its most zealous enforcers. Public denunciation of a former patron does double work: it wipes out the accuser's own compromising past and shows loyalty to the new power. Intimacy with the targeted class therefore breeds cruelty toward it rather than protection.
Civil ideological conflict can be read as Cain killing Abel: violence carried out by people who share a village, a childhood and a history, not by strangers. Seen this way, abstract categories like class enemy or reactionary become tools that let neighbors turn private grievances, envy and fear into sanctioned violence. The same intimacy remains the only force able to break the category, through a face or a memory that refuses reclassification.