In short
On April 17, 1975, the Khmer Rouge, a communist faction led by Pol Pot, seized control of Cambodia's capital Phnom Penh and established Democratic Kampuchea. Over the next four years, the regime's radical agrarian ideology and brutal enforcement would result in the deaths of approximately 1.7 to 2 million people—roughly a quarter of Cambodia's population.
How it unfolded.
The five-minute version
What actually happened.
Khmer Rouge is the name that was popularly given to members of the Communist Party of Kampuchea (CPK), and by extension to Democratic Kampuchea, which ruled Cambodia between 1975 and 1979. The name was coined in the 1960s by Norodom Sihanouk to describe his country's heterogeneous, communist-led dissidents, with whom he allied after the 1970 Cambodian coup d'état.
As it was happening
14 voices, 9190 days.
One beat at a time. Click any dot on the timeline to jump, press play for autoplay, or use the arrow keys to step.
Cambodia gains independence
Cambodia becomes independent from France, with Norodom Sihanouk as head of state.
Voices from this moment (1)
Cambodia gains independence
Nov 9
“Cambodia becomes independent from France, with Norodom…”
As it was happening
14 voices, 9190 days.
Day 0 · November 9, 1953
Cambodia gains independence
Cambodia becomes independent from France, with Norodom Sihanouk as head of state.
“Cambodia becomes independent from France, with Norodom…”
- Cambodia gains independence, Nov 9
Day 2517 · September 30, 1960
Communist Party of Kampuchea founded
CPK is established as the formal communist organization; Pol Pot joins the party around this time.
“CPK is established as the formal communist organization;…”
- Communist Party of Kampuchea founded, Sep 30
Day 5973 · March 18, 1970
Sihanouk overthrown; Khmer Republic established
General Lon Nol's coup removes Sihanouk, triggering civil war as Khmer Rouge and Vietnamese communists gain ground.
“General Lon Nol's coup removes Sihanouk, triggering civil…”
- Sihanouk overthrown; Khmer Republic established, Mar 18
Day 7829 · April 17, 1975
Khmer Rouge captures Phnom Penh
Communist forces enter the capital, forcing the collapse of the Khmer Republic. Pol Pot becomes de facto leader; the regime declares 'Year Zero.'
“Cambodian Communists Seize Capital; Prince Sihanouk's…”
- The New York Times, Apr 17
“Les Khmers rouges proclament la Republique Democratique de…”
- Agence France-Presse, Apr 17
“Red Army Takes Cambodia; Phnom Penh Falls to Communist…”
- The Times, Apr 18
“Communist Victory in Cambodia Raises Questions Over Refugee…”
- BBC, Apr 19
“Kambodscha: Im Griff der Roten Khmer”
- Der Spiegel, Apr 21
“Communist forces enter the capital, forcing the collapse of…”
- Khmer Rouge captures Phnom Penh, Apr 17
Day 7843 · May 1, 1975
Democratic Kampuchea officially proclaimed
Khmer Rouge formally establishes Democratic Kampuchea as the new state, with Pol Pot as Prime Minister from 1976.
“Khmer Rouge formally establishes Democratic Kampuchea as…”
- Democratic Kampuchea officially proclaimed, May 1
Day 7874 · June 1, 1975
Mass forced relocations begin
Urban populations are forcibly evacuated to agricultural communes; intellectuals, professionals, and ethnic minorities targeted for persecution.
“Urban populations are forcibly evacuated to agricultural…”
- Mass forced relocations begin, Jun 1
Day 8454 · January 1, 1977
New Constitution adopted
Regime formally adopts Constitution of Democratic Kampuchea; intensification of purges within party ranks accelerates.
“Regime formally adopts Constitution of Democratic…”
- New Constitution adopted, Jan 1
Day 8819 · January 1, 1978
Vietnamese invasion preparations
Border clashes escalate between Khmer Rouge and Vietnam; internal purges reach peak intensity as Pol Pot consolidates power.
“Border clashes escalate between Khmer Rouge and Vietnam;…”
- Vietnamese invasion preparations, Jan 1
Day 9190 · January 7, 1979
Vietnamese forces capture Phnom Penh
Vietnamese army and Cambodian defectors overthrow the Khmer Rouge regime; Pol Pot flees to Thai border regions.
“Vietnamese army and Cambodian defectors overthrow the Khmer…”
- Vietnamese forces capture Phnom Penh, Jan 7
The numbers.
3 numbers that anchor the scale.
By the numbers
The countable parts.
Estimated deaths during regime
0.0–2 million people
Percentage of Cambodia's population killed
~0%
Duration of rule
0–1979 (3 years, 8 months)
The visual record.
Front pages.
3 outlets carried the story: The New York Times, The Times, Agence France-Presse.
Media coverage
What the world was reading.
5 pieces, ranked by how much they shaped the discourse.
The New York Times
Newspaper · United States · Apr 17, 1975
"Cambodian Communists Seize Capital; Prince Sihanouk's Government Falls"
Khmer Rouge forces entered Phnom Penh on Thursday, ending a five-year civil war and establishing communist rule over Cambodia. The takeover marked the fall of the U.S.-backed government and Prince Norodom Sihanouk's return to the country after years in exile.
- Apr 18, 1975
The Times
Newspaper · United Kingdom
"Red Army Takes Cambodia; Phnom Penh Falls to Communist Forces"
Communist forces claiming to represent the Khmer Rouge have consolidated control of the Cambodian capital after driving out government troops. Foreign observers remain uncertain about the ideology and intentions of the revolutionary movement now governing the nation.
- Apr 17, 1975
Agence France-Presse
Newspaper · France
"Les Khmers rouges proclament la Republique Democratique de Kampuchea"
FR: 'Les Khmers rouges proclament la Republique Democratique de Kampuchea' / EN: The Khmer Rouge proclaimed the Democratic Republic of Kampuchea following their military victory. The new regime signaled radical social transformation under communist leadership.
- Apr 19, 1975
BBC
Radio · United Kingdom
"Communist Victory in Cambodia Raises Questions Over Refugee Crisis"
Synthesized from period reporting - The Khmer Rouge takeover has triggered mass civilian displacement as thousands attempt to flee the capital. Western governments expressed alarm over the humanitarian situation unfolding in Southeast Asia.
- Apr 21, 1975
Der Spiegel
Magazine · West Germany
"Kambodscha: Im Griff der Roten Khmer"
DE: 'Kambodscha: Im Griff der Roten Khmer' / EN: Cambodia in the Grip of the Red Khmer. German analysts questioned whether the new communist state would align with China or Vietnam, potentially reshaping Cold War dynamics in Indochina.
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Sources & citations.
Sources
Where this came from.
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
Wikipedia
1 source- 1.Khmer Rouge
en.wikipedia.org