On April 17, 1975, Khmer Rouge forces marched into Phnom Penh and ordered the entire city evacuated within 48 hours. Two million residents — including hospital patients still connected to IVs — were forced into the countryside at gunpoint. Pol Pot declared 'Year Zero': Cambodia would be rebuilt from scratch as an agrarian utopia. Money was abolished overnight. Banks were dynamited. Schools and universities were shuttered. Temples were converted into prisons or grain stores. Doctors, teachers, lawyers, and anyone wearing glasses (a sign of literacy) were marked for elimination. The Khmer Rouge saw Cambodia's existing institutions — markets, courts, religious orders, family structures, professional guilds — as corrupted tools of exploitation. They didn't ask why these structures existed. ...
Popular framing: Pol Pot was a deranged ideologue who killed his own people.
Structural analysis: An ideology that treated existing institutions — markets, courts, religious orders, family hierarchies, professional knowledge — as corrupt overhead removed every fence at once without asking what each one had been doing. The replacement (a single command hierarchy, the Angkar) lacked the requisite variety to process the complexity of feeding seven million people. Currency had been carrying specialization, monks had been carrying agricultural calendars, courts had been resolving disputes without violence; all of it collapsed into a single channel that couldn't handle the load.
The popular framing makes Year Zero a story about bad ideology, which implies the lesson is 'avoid bad ideology.' The structural framing reveals the deeper lesson: even well-intentioned actors with legitimate grievances can cause civilizational collapse by dismantling institutions they don't understand. Chesterton's Fence is the operative principle — the Khmer Rouge never asked why markets, monks, and courts existed before destroying them. This gap matters because it reframes the risk: the danger is not only extremism but confident ignorance about the hidden load-bearing functions of evolved social structures.