My Lai massacre
E25688
The My Lai massacre was a notorious 1968 atrocity during the Vietnam War in which U.S. soldiers killed hundreds of unarmed Vietnamese civilians, becoming a symbol of the conflict’s brutality and sparking widespread outrage.
All labels observed (8)
| Label | Occurrences |
|---|---|
| My Lai massacre canonical | 19 |
| My Lai | 2 |
| My Lai Massacre | 1 |
| My Lai hamlet | 1 |
| My Lai operation | 1 |
| My Lai, Sơn Tịnh District, Quảng Ngãi Province, South Vietnam | 1 |
| Mỹ Lai massacre | 1 |
| Son My massacre | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T196199 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
Target entity: My Lai massacre Context triple: [Vietnam War, significantEvent, My Lai massacre]
-
A.
Kanto Massacre of Koreans
The Kanto Massacre of Koreans was a 1923 wave of mob and military violence in Japan in which thousands of Koreans were killed amid false rumors and xenophobic panic following the Great Kanto Earthquake.
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B.
Gulf of Tonkin incident
The Gulf of Tonkin incident was a 1964 naval confrontation between North Vietnam and the United States that led to a major escalation of U.S. military involvement in the Vietnam War.
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C.
Fall of Saigon
The Fall of Saigon was the April 30, 1975 capture of South Vietnam’s capital by North Vietnamese forces, marking the end of the Vietnam War and the reunification of Vietnam under communist control.
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D.
Indian Creek massacre
The Indian Creek massacre was an 1832 attack during the Black Hawk War in which a group of Potawatomi and Sauk warriors killed and captured settlers near present-day Earlville, Illinois.
-
E.
Bloody Sunday
Bloody Sunday was a 1972 incident in Derry, Northern Ireland, when British soldiers shot and killed unarmed civil rights protesters, becoming one of the most infamous and galvanizing events of the Troubles.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: My Lai massacre Target entity description: The My Lai massacre was a notorious 1968 atrocity during the Vietnam War in which U.S. soldiers killed hundreds of unarmed Vietnamese civilians, becoming a symbol of the conflict’s brutality and sparking widespread outrage.
-
A.
Kanto Massacre of Koreans
The Kanto Massacre of Koreans was a 1923 wave of mob and military violence in Japan in which thousands of Koreans were killed amid false rumors and xenophobic panic following the Great Kanto Earthquake.
-
B.
Gulf of Tonkin incident
The Gulf of Tonkin incident was a 1964 naval confrontation between North Vietnam and the United States that led to a major escalation of U.S. military involvement in the Vietnam War.
-
C.
Fall of Saigon
The Fall of Saigon was the April 30, 1975 capture of South Vietnam’s capital by North Vietnamese forces, marking the end of the Vietnam War and the reunification of Vietnam under communist control.
-
D.
Indian Creek massacre
The Indian Creek massacre was an 1832 attack during the Black Hawk War in which a group of Potawatomi and Sauk warriors killed and captured settlers near present-day Earlville, Illinois.
-
E.
Bloody Sunday
Bloody Sunday was a 1972 incident in Derry, Northern Ireland, when British soldiers shot and killed unarmed civil rights protesters, becoming one of the most infamous and galvanizing events of the Troubles.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
atrocity
ⓘ
massacre ⓘ war crime ⓘ |
| alsoKnownAs |
My Lai massacre
ⓘ
surface form:
Son My massacre
|
| civilianCasualties | hundreds ⓘ |
| commandingOfficer |
Ernest Medina
ⓘ
William Calley ⓘ |
| commemoration | My Lai Memorial in Son My ⓘ |
| conflict | Vietnam War ⓘ |
| countryInvolved |
Republic of Vietnam
ⓘ
surface form:
South Vietnam
United States of America ⓘ
surface form:
United States
|
| date | 1968-03-16 ⓘ |
| estimatedNumberOfVictims |
347
ⓘ
504 ⓘ |
| exposedBy | Seymour Hersh ⓘ |
| firstMajorPressRevelationYear | 1969 ⓘ |
| impact |
heightened criticism of U.S. military conduct
ⓘ
increased anti-war sentiment in the United States ⓘ |
| legalOutcome |
conviction of William Calley for murder
ⓘ
court-martial of William Calley ⓘ |
| location |
My Lai massacre
self-linksurface differs
ⓘ
surface form:
My Lai hamlet
Quang Ngai Province ⓘ Son My village ⓘ Son Tinh District ⓘ Republic of Vietnam ⓘ
surface form:
South Vietnam
|
| mediaOutlet | Dispatch News Service ⓘ |
| militaryOperationContext | Search and destroy mission ⓘ |
| notableVictimGroup |
children
ⓘ
elderly people ⓘ infants ⓘ women ⓘ |
| pardonOrClemencyBy | Richard Nixon ⓘ |
| perpetrator |
United States Army
ⓘ
surface form:
United States Army soldiers
|
| perpetratorUnit |
11th Infantry Brigade
ⓘ
Americal Division ⓘ Company C, 1st Battalion, 20th Infantry Regiment ⓘ |
| publicReaction |
international condemnation
ⓘ
widespread outrage in the United States ⓘ |
| sentence | life imprisonment for William Calley ⓘ |
| sentenceModification | reduced to house arrest ⓘ |
| symbolOf |
brutality of the Vietnam War
ⓘ
civilian suffering in war ⓘ |
| typeOfCrime |
mass killing
ⓘ
mass rape ⓘ war crime against civilians ⓘ |
| victims |
Vietnamese civilians
ⓘ
unarmed villagers ⓘ |
| whistleblower | Hugh Thompson Jr. ⓘ |
| whistleblowerRole | U.S. Army helicopter pilot ⓘ |
| year | 1968 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Subject: My Lai massacre Description of subject: The My Lai massacre was a notorious 1968 atrocity during the Vietnam War in which U.S. soldiers killed hundreds of unarmed Vietnamese civilians, becoming a symbol of the conflict’s brutality and sparking widespread outrage.
Referenced by (27)
Full triples — surface form annotated when it differs from this entity's canonical label.