Below we dive into 10 horrifying stories of communist prisons and labor camps, each a chilling reminder of how ideology can be twisted into terror. From the infamous S‑21 facility in Cambodia to the gruesome Pitesti Experiment in Romania, these accounts expose the brutal tactics, relentless torture, and massive loss of life that defined these repressive regimes.
10 Horrifying Stories Overview
This overview sets the stage for the ten terrifying tales that follow, highlighting the systematic cruelty inflicted upon countless inmates across continents and decades.
10 21
In 1960, two Khmer men—Saloth Sar and Nuon Chea—formed a small, Mao‑inspired communist cell that would later be known as the Communist Party of Kampuchea, better recognized by its French moniker, the Khmer Rouge or “Red Khmers.” Saloth Sar eventually adopted the name Pol Pot as his own.
From 1960 until 1975, the Khmer Rouge waged a guerrilla war against the Kingdom of Cambodia, which was backed by the United States and France. Though initially supported by Ho Chi Minh’s Vietnamese communists, the alliance fractured, culminating in a full‑scale Vietnamese invasion of Cambodia in 1979.
The regime’s brutality sparked the infamous “Year Zero” policy in 1975, forcing two million city dwellers from Phnom Penh and other urban areas into forced agricultural labor. The Khmer Rouge outlawed money, markets, schooling, private ownership, religion, and many facets of traditional Khmer culture. To enforce obedience, they erected re‑education camps nationwide, the most notorious being S‑21.
When Vietnam seized Phnom Penh, the guards at S‑21 fled, abandoning a trove of photographs and letters from prisoners. Estimates suggest that about 30,000 individuals passed through S‑21, with roughly 12,000 murdered.
Former camp commander Duch, whose real name was Kaing Guek Eav, later testified before an international tribunal, detailing torture methods such as beatings with sticks, electric shocks, suffocation with plastic bags, and a crude water‑boarding technique employing a towel and water. Inmates also endured electric‑wire whippings, and female prisoners faced rape and sexual assault. Some former Khmer Rouge members admitted that while the official aim of torture was to extract confessions, it was frequently carried out for sheer personal gratification.
Between 1975 and 1979, Pol Pot’s reign resulted in the deaths of 1.5 to 2 million Cambodians. Pol Pot himself died in 1998 at the age of 72.
9 Vietnam’s Reeducation Camps
Even after ousting the genocidal Khmer Rouge, Vietnam’s communist regime cannot be labeled a humanitarian beacon. Following the North’s victorious takeover of the South in 1975, the new government instituted a network of brutal re‑education camps across the nation.
Estimates indicate that between one and 2.5 million individuals entered these camps in 1975 alone, promised swift “re‑education” in Marxist‑Leninist doctrine. The camps were stratified into five levels. Level‑one camps functioned as study centers, allowing inmates to return home each night, while level‑two camps imposed similar indoctrination but barred nightly returns for three to six months. Roughly 700,000 people endured both level‑one and level‑two programs.
Level‑three camps, termed socialist reform camps, housed about 50,000 inmates. Levels‑four and five mirrored level‑three in their harsh labor demands, targeting those deemed less receptive to socialist ideology—intellectuals, Roman Catholics, teachers, legislators, and judges. Even as late as 1987, approximately 15,000 prisoners remained incarcerated.
It is believed that as many as 165,000 Vietnamese perished in these camps between 1975 and 1990, though the true toll may be higher. Considering that the first re‑education facilities were launched in North Vietnam in 1961, it is plausible that over one million Vietnamese lost their lives in communist‑run camps across both the North and South.
8 The Xinjiang Camps
The far‑western Chinese region of Xinjiang has endured centuries of conflict. In 1775, the Qing Empire, ruled by Manchu elites, launched a campaign that exterminated between 480,000 and 500,000 Dzungar Mongols—roughly 80 % of their population—while the survivors were enslaved.
Today, the Uyghur minority faces a massive government crackdown. Roughly one million people are believed to be detained in internment facilities across China, representing about ten percent of the entire Uyghur population.
The stated aim of these camps is to “re‑educate” Uyghurs and erase their ethnic and religious identity. Inmates are forced to converse in Mandarin and are reportedly required to proclaim, “I’m not a Muslim,” each day. Similar pressures are applied to other minorities, including Hui Muslims, Kazakhs, Uzbeks, Turkmen, and even non‑Muslim groups.
In 2018, Uyghur activists told Radio Free Asia that the Xinjiang camps are squalid work sites where detainees must praise Xi Jinping daily, sing communist anthems, and publicly confess to “crimes” such as attending a mosque or traveling abroad. Former inmate Kayrat Samarkand, a Kazakh, recounted grueling interrogations lasting several days and described being forced to wear a metal suit weighing over 23 kg (50 lb) as a form of torture.
The Chinese government justifies these measures by citing Islamist terrorism within its borders and highlighting Uyghur involvement in conflicts in Syria and Afghanistan alongside ISIS and Al‑Qaeda affiliates.
7 ‘Farewell To The World’
Few outside the Ethiopian diaspora are familiar with the Derg, officially the Provisional Military Government of Socialist Ethiopia, which seized power in 1974 and ruled until 1987. During its tenure, Ethiopia endured multiple humanitarian catastrophes: a massive famine, economic collapse, and costly wars against Eritrean and Tigrayan forces. The most devastating period occurred between 1984 and 1986, when a two‑year drought triggered a famine that afflicted 5.8 million people, followed by locust and grasshopper plagues in 1986. In total, these crises claimed 1.2 million lives.
Beyond these “natural” disasters—largely the product of forced villagization and oppression—the Derg orchestrated a massive campaign of terror known as the Red Terror. Announced after the Derg seized Addis Ababa, the Red Terror saw troops and communist militias storm homes and villages in search of “counter‑revolutionaries.” Estimates suggest up to 50,000 people were killed during this purge.
Many Red Terror victims were incarcerated at Alem Bekagn, meaning “Farewell to the World,” a prison in Addis Ababa already infamous for the 1937 Yekatit 12 massacre carried out by Italian fascists. Under the Derg, Alem Bekagn became a site of torture and mass execution. Argentine forensic experts uncovered several mass graves there in 1990. One of the worst atrocities, the Massacre of Sixty, involved Derg officials executing 60 former officials of Emperor Haile Selassie’s government. Other victims included Ethiopian teenagers, suspected anti‑communists, and intellectuals. The African Union estimates that 10,000 people were executed at Alem Bekagn, with thousands more dying from overcrowding and disease.
6 Lenin’s Gulags
Many Soviet apologists claim that Vladimir Lenin, the first communist ruler of Bolshevik Russia, was not a genocidal monster like Stalin. This view overlooks how Lenin expanded the Tsarist Siberian prison system into the notorious “gulag archipelago.”
By 1920, Russia operated about 84 labor and prison camps designed to “rehabilitate” enemies of the Soviet state. By 1923, the network swelled to over 300 camps, holding roughly 70,000 inmates. As early as 1918, Leon Trotsky wrote that the Soviet regime intended to modernize Russia on the backs of slave labor, referring to inmates as “vermin” who must endure “thousands of forms and means of practical reckoning by the communes themselves.” In practice, this meant forced labor to death on railroads and factories.
Lenin’s feared secret police, the Cheka, also ran its own camps. In 1920, 100,000 Russian citizens were convicted by Cheka courts and sentenced to forced labor. The Cheka facilities were built to house only 40,000‑60,000 inmates. Across these camps, unsanitary conditions caused thousands of deaths from disease, while starvation, overwork, and executions claimed the rest. Corruption ran rampant, with career criminals given freedom to prey upon fellow prisoners.
5 The Belene Labor Camp
The Belene Labor Camp, often labeled a “concentration” camp by Western observers, evokes the same horror associated with the Nazi Holocaust. Operated intermittently from 1949 to 1989 on Belene Island in Bulgaria, the facility detained thousands of political prisoners alongside hardened criminals, whom guards encouraged to terrorize the political detainees.
During the 1950s, hundreds of inmates succumbed to malnutrition and exhaustion while forced to fell trees, harvest vegetables, and perform other grueling manual labor with scant food or water. Prisoners who broke camp rules were sometimes used as target practice or cast adrift at sea to freeze to death.
The camp officially closed in 1959 after Soviet‑directed anti‑Stalinist purges. Nonetheless, during the 1970s and 1980s, Bulgarian Muslims and ethnic Turks opposing the government’s assimilation campaigns were detained on Belene Island under squalid conditions for months or years. Earlier, in the 1950s, Christian pastors were frequently sent to the camp as “spies.” One inmate, Haralan Popov, authored a book detailing how guards attempted to convert religious prisoners to atheism, often torturing those who resisted for days on end.
4 Castro’s Concentration Camps
The term “concentration camp” first emerged on Cuba’s verdant island in the late 19th century, originally describing Spanish‑run camps for Cuban independence supporters. The United States later used the term to justify the Spanish‑American War of 1898.
Decades later, Fidel Castro’s communist regime resurrected concentration camps for the Cuban populace. Under the innocuous name Military Units to Help Production (UMAP), the government began imprisoning anyone deemed “counter‑revolutionary” in November 1965. Humiliation, torture, and rape were commonplace, and many inmates chose suicide over starvation or disease.
The purpose of these camps was to “re‑educate” Cubans in the virtues of socialism. Religious Christians, rock‑and‑roll fans, long‑haired men, and those perceived as overly Western were forced into hard labor. Homosexuals were singled out as “scum,” deemed unworthy of the same rights as heterosexuals.
Like the infamous Nazi concentration and extermination camps, the UMAP facilities displayed slogans such as “Work Will Make Men Out of You.”
3 Laogai
Laogai, roughly translating to “reform through labor,” were modeled after Soviet gulags and opened following Mao Zedong’s rise to absolute power in 1949. Though renamed, hundreds of these camps continue operating throughout China today.
Harry Wu, a survivor who spent 19 years in a Laogai camp and now runs the Laogai Museum in the United States, claims that at the height of Mao’s rule, roughly 40 million Chinese were interned. Inmates were forced to labor for endless hours under dangerous conditions, with food and water scarcely provided, prompting theft among prisoners. The camps also allegedly harvested organs from detainees, a practice alleged to persist.
Wu describes the “tiger chair,” a brutal torture device where prisoners are bound, gagged, and forced to sit on a bench with bricks placed under their legs, compelling them to endure excruciating positions for hours or days. Mao’s regime also oversaw the Great Chinese Famine (1958‑1961), which may have claimed 30 million lives, and the Cultural Revolution (1966‑1976), during which radicalized youth publicly denounced teachers and family members as “counter‑revolutionaries.” Show trials and “struggle sessions” forced confessions, leading many to be sent to labor camps or executed. Death toll estimates for this era range from 1.5 to 7.7 million.
2 Stalin’s Gulags
No communist leader eclipses Joseph Stalin in infamy. Though credited with industrializing Russia, Stalin achieved this by murdering millions via overwork, starvation, and execution. The Great Purge alone saw 20 million people killed by state forces, while forced collectivization caused additional massive fatalities. For instance, Kazakhstan’s forced collectivization (1930‑1933) resulted in a famine that killed 1.5 million, and Ukraine’s Holodomor (1932‑1933) claimed roughly three million lives, with an estimated 28,000 Ukrainians dying of starvation each day.
Stalin expanded Lenin’s gulag system to accommodate those opposed to collectivization. Criminals and gangsters were housed alongside political prisoners, with guards encouraging them to brutalize inmates. Those lacking connections endured 14‑hour workdays, performing tasks such as lumber cutting, dam ditch digging, and ore and coal mining. Prisoners subsisted on starvation diets, leading many to die from malnutrition, dehydration, exhaustion, and lung diseases caused by inhaling dust.
Survivors like Varlam Shalamov and Aleksandr Solzhenitsyn chronicled the inhuman conditions of the gulags, where murder and robbery were commonplace among starving inmates. Former guard Danzig Baldaev produced graphic sketches depicting forced feeding, gangsters urinating on beaten inmates, decapitations, insertion of soldering irons into intimate regions, and the existence of female and child sex slavery.
1 The Pitesti Experiment
Between 1949 and 1951, Romania witnessed an atrocity so grotesque it shocked even hardened Soviet officials. Known as the Pitesti Experiment, these re‑education trials unfolded inside Pitesti Prison under the direction of Ana Pauker and Eugen Turcanu. Pauker, an Orthodox‑Jewish lifelong leftist previously involved with Romania’s Social Democratic and Socialist parties, partnered with Turcanu, a former convict and ex‑member of the anti‑Semitic Iron Guard.
Together, they transformed Pitesti Prison into a laboratory aimed at forging new communists from the remnants of pre‑communist Romania. Victims included former officials of Ion Antonescu’s regime, Iron Guard members, landowners, diplomats, Orthodox and Catholic priests, intellectuals, and Jews labeled “Zionist.” These prisoners were branded “enemies of the people,” and subjected to a spectrum of torture by Turcanu, Pauker, and their subordinates.
Methods of torture were grotesque: inmates who refused to renounce Christianity were forced to partake in a “communion” of fecal matter; those who would not confess were compelled to submerge their hands in urine‑filled chamber pots; prisoners were made to spit into the mouths of suspected spies; and on Christmas, detainees were forced to mock the Nativity. Survivors recount that Turcanu especially tormented priests, baptizing them each morning with urine and feces, holding their heads inside putrid buckets nearly to the point of drowning.
The experiment’s goal was to coerce prisoners into confessing that they deserved such punishment for past anti‑communist deeds, while simultaneously eradicating any sense of individualism. Physical torture was paired with prolonged solitary confinement, often carried out by fellow inmates—typically students recruited because of their non‑communist affiliations. Prisoners were forced to eat while kneeling on the floor with hands tied behind their backs, often consuming each other’s excrement. On Easter 1950, inmates were compelled to kiss a phallus‑shaped insect‑repellent paper, and on most other days were encouraged to commit suicide—a practice that guards sometimes halted only to prolong suffering.
The experiments ceased when Gheorghe Gheorghiu‑Dej, the Romanian Communist Party’s General Secretary, successfully lobbied Stalin to purge Pauker and her supporters. Pauker was accused of Zionism and nationalist sympathies for Jewish immigration to Israel. Turcanu stood trial in 1954 and was executed by firing squad on December 17, 1954. After his death, the Party attempted to pin all crimes on Pauker and Turcanu, though contemporary scholars generally agree the party itself fostered the experiments.