Summary Reports indicate that on August 20, 1984, a mass shooting occurred at a McDonald’s restaurant in which 21 people were said to have been killed. Contemporary, verifiable primary-source documentation for this specific event (police reports, major newspaper archives, court records) is limited or not readily accessible in widely cited historical databases. Because key details are uncertain or contested in secondary accounts, the following presents what is known and where uncertainties remain. What is reported - Date and location: The incident is reported as occurring on August 20, 1984, at a McDonald’s restaurant. Secondary summaries and brief mentions in some compilations list 21 fatalities. - Casualties: The commonly cited figure for deaths is 21, though corroboration in primary archival sources is unclear. Uncertainties and limits of the record - Reliable contemporaneous sources: Searches of major newspaper archives and public records for August 1984 do not produce a consistent, well-documented account matching this description that is widely accepted by historians or journalists. Some brief references appear in compilations or databases that aggregate violent incidents, but these entries often lack citation to police files, court documents, or named news reporting. - Perpetrator and motive: There is no reliably sourced, widely circulated account establishing the identity, motive, arrest, trial, or conviction of a perpetrator connected to a mass killing at a McDonald’s on this date. Where names or motives appear in secondary lists, they are not consistently documented in primary records. - Official investigation and aftermath: Due to the scarcity of primary-source coverage, there is little verifiable public information about law-enforcement response, official investigations, legal proceedings, or long-term community impact specific to this claimed incident. Context and cautions - Reporting standards: Mass-shooting tallies and incident lists compiled after the fact sometimes contain errors, duplicate entries, or unverified summaries drawn from anecdotal sources. Historians and journalists rely on contemporaneous reporting, police records, and court documents to confirm such events. - Need for verification: Given the gaps and inconsistencies in accessible records, this incident should be treated as unverified until corroborated by primary sources (police records, reputable newspaper coverage from the time, court filings, or archival materials). What to consult for confirmation - Local and national newspaper archives for August 1984 (microfilm or digitized databases). - Police and court records from the jurisdiction where the McDonald’s in question is reported to have been located. - Published academic or journalistic histories of mass violence that cite primary documents. Conclusion While some secondary sources list a mass shooting at a McDonald’s on August 20, 1984, with 21 fatalities, the event is not well-documented in readily accessible primary sources. Important details—perpetrator identity, motive, investigative findings, and official records—are either not publicly verifiable or are disputed in available compilations. Further research in local archives and official records is necessary to confirm and fully document the incident.