[This index is under development]

Religious and Cultural

Religious Intolerance
Forced Conversion
Witch hunts
Inquisitions
Pogroms
Caste systems

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Racial and Ethnic

Segregation
Ghettoization 
Jim Crow Laws
Racial Quotas
Apartheid
Eugenics
Forced Sterilization
Lynchings

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Political and Economic

Palmer raids
MacCarthyism

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Sexual and Gender

Honor killing
Sex selection
Mass rape

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Slavery

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Ottoman Empire/Turkey

• Armenian Genocide
  
• Assyrian Genocide
  
• Greek genocide
  
• Dersim massacre: Kurds
  

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Colonialism and Imperialism

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• Herero and Namaqua Genocide: 1904
  

• Great Irish Famine: 1845 to 1850
  

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• American Indian Wars
  
• Trail of Tears
  

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• Haiti Massacre: 1804 
  
• Caste War of Yucatán
  
• The indigenous rebellions of Túpac Amaru II
  

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Australia 
"Stolen Generation" —  1900 to 1970

• 20,000 to 25,000 Aboriginal children were forcibly separated from their natural families (Bringing Them Home report)

Black War

In the Name of Religion

• Thirty Years War
  
• Catholic Inquisition
  

Russian Tsarist Empire

• Muhajir (Caucasus): 1860s
  
• Caucasian War
  

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Collective Atrocities

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Governments killing their own citizens
Ethnic cleansing
Crimes Against Humanity
Democide
Politicide

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Mass Killing: Recent Examples: 20th-Century

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Nazi Germany and occupied Europe

• The Holocaust
  
• Racial policy of Nazi Germany
  
• Nazi crimes against ethnic Poles
  
• Siege of Leningrad
  

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European and Western Nations

• Expulsion of Germans after World War II
  
• Franco's Spain

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• Bosnian Genocide: Bosnia and Herzegovina 1992–1995
• Srebrenica Genocide
  
• Serbia
• Croatia
• Kosovo

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Central and South America

• Guatemalan civil war: 1968-1996
  
• Dirty War in Argentina: 1976 - 1983
  
• Pinochet Regime
• Helmet Massacre of the Tikuna people: Brazil, 1988
  
• Haximu Massacre of Yanomami Indians: Brazil, 1993
  
• Genocide of the Rio Pardo Indians
  

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Africa

• Crime of apartheid
  
• Burundi 1972 and 1993
  
• Rwandan Genocide 1994
  
• Democratic Republic of Congo
  
• Genocidal killings against Somalia's Bantu and Jubba Valley dwellers from 1991 
  
• Equatorial Guinea
  
• Zanzibar Revolution
  
• Ethiopian Red Terror
  
• War in Darfur
  
• Congo Civil War, Pygmies
  

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East Asia

• Japanese war crimes
  
• Japanese invasion of China
  
• Nanking Massacre
  
• Japan's Asian holocaust
• Vietnam War
• US bombings of Laos and Cambodia
  
• Cambodia: Pol Pot Killing Fields
• Indonesian occupation of East Timor: 1975-1999
• North Korea
• Myanmar
  
• Struggle sessions after the 1959 Tibetan uprising
  

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Kuomintang Republic of China 

• Muslim warlord Ma Bufang launched seven expeditions into Golog, causing the death of thousands of Tibetans
  

People's Republic of China

• Land reform and the suppression of counterrevolutionaries
• Mao's Great Leap Forward
• The Great Proletarian Cultural Revolution

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Middle East and South Asia

• Sabra and Shatila massacre: Lebanon, 1982
  
• Soviet invasion of Afghanistan
  
• Soviet war in Afghanistan: 1979–1989
• Halabja poison gas attack: Iraqi Kurds

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India, Pakistan, Bangladesh

• India: Independence
  
• 1947 Partition of India: Millions of Muslims, Hindus and Sikhs
  
• 1971 Bangladesh war atrocities by Pakistan 
• Operation Searchlight
• Bangladesh Liberation War

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Eastern Europe

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Soviet Union

• Red Terror
• White Terrors
• Forced Collectivization
  
• forced resettlement
  
• Decossackization
  
• Lenin's Hanging Order
• The Great Terror
• Stalinist Purges
• Great Purge (Yezhovshchina)
  • National operations of the NKVD
  • Great purge in Mongolia
• Soviet killings during World War II

Soviet Union Ethnocide

• Decossackization
• Holodomor: Soviet famine of 1932-1933
• Deportation of Chechen people
• Mass Deportations in the Baltic States of Lithuanians, Latvians and Estonians