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https://en.wikipedia.org/wiki/Soviet_war_crimes

https://en.wikipedia.org/wiki/Cambodian_genocide

https://en.wikipedia.org/wiki/Mass_killings_of_landlords_under_Mao_Zedong

https://en.wikipedia.org/wiki/Holodomor

https://en.wikipedia.org/wiki/Red_Terror

https://en.wikipedia.org/wiki/Communist_purges_in_Serbia_in_1944–45

https://en.wikipedia.org/wiki/Purges_of_the_Communist_Party_of_the_Soviet_Union

https://en.wikipedia.org/wiki/Great_Purge

https://en.wikipedia.org/wiki/Cultural_Revolution

https://en.wikipedia.org/wiki/Persecution_of_Falun_Gong

https://en.wikipedia.org/wiki/Tugboat_%2213_de_Marzo%22_massacre

https://en.wikipedia.org/wiki/Massacre_at_Huế

https://en.wikipedia.org/wiki/Communist_terrorism

https://en.wikipedia.org/wiki/Tezno_massacre

https://en.wikipedia.org/wiki/Katyn_massacre

https://en.wikipedia.org/wiki/1951_Mokotów_Prison_execution

https://en.wikipedia.org/wiki/Gegenmiao_massacre

https://en.wikipedia.org/wiki/Uyghur_genocide

https://en.wikipedia.org/wiki/Persecution_of_Christians_in_the_Soviet_Union

https://en.wikipedia.org/wiki/Great_Chinese_Famine

https://en.wikipedia.org/wiki/Great_Leap_Forward

https://en.wikipedia.org/wiki/Laogai

https://en.wikipedia.org/wiki/Dekulakization

https://en.wikipedia.org/wiki/Human_rights_in_the_Soviet_Union

https://en.wikipedia.org/wiki/Human_rights_in_China

https://en.wikipedia.org/wiki/USSR_anti-religious_campaign_(1921–1928)

https://en.wikipedia.org/wiki/USSR_anti-religious_campaign_(1928%E2%80%931941)

https://en.wikipedia.org/wiki/USSR_anti-religious_campaign_(1958%E2%80%931964)

https://en.wikipedia.org/wiki/Soviet_anti-religious_legislation

https://en.wikipedia.org/wiki/Campaign_to_Suppress_Counterrevolutionaries

https://en.wikipedia.org/wiki/Three-anti_and_Five-anti_Campaigns

https://en.wikipedia.org/wiki/Sufan_movement

https://en.wikipedia.org/wiki/Anti-Rightist_Campaign

https://en.wikipedia.org/wiki/Xunhua_Incident

https://en.wikipedia.org/wiki/Chinese_Land_Reform

https://en.wikipedia.org/wiki/Inner_Mongolia_incident

https://en.wikipedia.org/wiki/Shadian_incident

https://en.wikipedia.org/wiki/Zhao_Jianmin_Spy_Case

https://en.wikipedia.org/wiki/1959_Tibetan_uprising

https://en.wikipedia.org/wiki/Red_August

https://en.wikipedia.org/wiki/Red_Guards

https://en.wikipedia.org/wiki/Ruijin_Massacre

https://en.wikipedia.org/wiki/Cleansing_the_Class_Ranks

https://en.wikipedia.org/wiki/1989_Tiananmen_Square_protests

https://en.wikipedia.org/wiki/Antireligious_campaigns_in_China

https://en.wikipedia.org/wiki/Khmer_Rouge_rule_of_Cambodia

https://en.wikipedia.org/wiki/Human_rights_in_North_Korea

https://en.wikipedia.org/wiki/Kwalliso

https://en.wikipedia.org/wiki/North_Korea%27s_illicit_activities

https://en.wikipedia.org/wiki/Political_repression_in_North_Korea

https://en.wikipedia.org/wiki/2011_crackdown_on_dissidents_in_China

https://en.wikipedia.org/wiki/709_crackdown

https://en.wikipedia.org/wiki/6521_Project

https://en.wikipedia.org/wiki/Black_jails

https://en.wikipedia.org/wiki/Organ_harvesting_from_Falun_Gong_practitioners_in_China

https://en.wikipedia.org/wiki/Persecution_of_Christians_in_the_Eastern_Bloc

https://en.wikipedia.org/wiki/Anti-religious_campaign_during_the_Russian_Civil_War

https://en.wikipedia.org/wiki/Polish_anti-religious_campaign

https://en.wikipedia.org/wiki/USSR_anti-religious_campaign_(1970s%E2%80%931987)

https://en.wikipedia.org/wiki/1922_confiscation_of_Russian_Orthodox_Church_property

https://en.wikipedia.org/wiki/Religious_persecution_during_the_Soviet_occupation_of_Bessarabia_and_Northern_Bukovina

https://en.wikipedia.org/wiki/Operation_North

https://en.wikipedia.org/wiki/Anti-Catholicism_in_the_Soviet_Union

https://en.wikipedia.org/wiki/Eastern_Catholic_victims_of_Soviet_persecutions

https://en.wikipedia.org/wiki/Kulen_Vakuf_massacre

https://en.wikipedia.org/wiki/Land_reform_in_North_Vietnam

https://en.wikipedia.org/wiki/Decossackization

https://en.wikipedia.org/wiki/Population_transfer_in_the_Soviet_Union

https://en.wikipedia.org/wiki/Political_repression_in_the_Soviet_Union

https://en.wikipedia.org/wiki/Occupation_of_the_Baltic_states#Soviet_terror

https://en.wikipedia.org/wiki/Lenin%27s_Hanging_Order

https://en.wikipedia.org/wiki/Stalinist_repressions_in_Mongolia

https://en.wikipedia.org/wiki/NKVD_prisoner_massacres

https://en.wikipedia.org/wiki/List_of_massacres_in_China

https://en.wikipedia.org/wiki/NKVD_special_camps_in_Germany_1945%E2%80%9350

https://en.wikipedia.org/wiki/Barbara_Pit_massacre

https://en.wikipedia.org/wiki/Bleiburg_repatriations

https://en.wikipedia.org/wiki/Foibe_massacres

https://en.m.wikipedia.org/wiki/Macelj_massacre

https://en.wikipedia.org/wiki/Leftist_errors

https://en.wikipedia.org/wiki/Ko%C4%8Devski_Rog_massacre

https://en.wikipedia.org/wiki/Prisons_in_North_Korea

https://en.wikipedia.org/wiki/Kwalliso

https://en.wikipedia.org/wiki/Land_reform_in_Vietnam

https://en.wikipedia.org/wiki/Persecution_of_the_Montagnard_in_Vietnam

https://en.wikipedia.org/wiki/Re-education_camp_(Vietnam)

https://en.wikipedia.org/wiki/Human_rights_in_Cuba

https://en.wikipedia.org/wiki/Red_Terror_(Ethiopia)

https://en.wikipedia.org/wiki/Xinjiang_re-education_camps

https://en.wikipedia.org/wiki/Sinicization_of_Tibet

https://en.wikipedia.org/wiki/Annexation_of_Tibet_by_the_People’s_Republic_of_China

https://en.wikipedia.org/wiki/Human_experimentation_in_North_Korea

https://en.wikipedia.org/wiki/Freedom_of_religion_in_North_Korea

https://en.wikipedia.org/wiki/Poison_laboratory_of_the_Soviet_secret_services

https://en.wikipedia.org/wiki/Polish_Operation_of_the_NKVD

https://en.wikipedia.org/wiki/Vinnytsia_massacre

https://en.wikipedia.org/wiki/Khaibakh_massacre

https://en.wikipedia.org/wiki/Kengir_uprising

https://en.wikipedia.org/wiki/Novocherkassk_massacre

https://en.wikipedia.org/wiki/Jeltoqsan

https://en.wikipedia.org/wiki/Sumgait_pogrom

https://en.wikipedia.org/wiki/Kirovabad_pogrom

https://en.wikipedia.org/wiki/Black_January

https://en.wikipedia.org/wiki/April_9_tragedy

https://en.wikipedia.org/wiki/Vorkuta_uprising

https://en.wikipedia.org/wiki/F%C3%A2nt%C3%A2na_Alb%C4%83_massacre

https://en.wikipedia.org/wiki/January_Events_(Lithuania)

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