Deadliest Mass Shootings in the US Since 1982
Source:
Mother Jones. As of March 18, 2017. Show details 
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Mother Jones (motherjones.com)
Public mass shootings defined as a lone shooter who took the lives of at least four people in a public place. If the shooter died he is not included in the count. Crimes primarily related to gang activity, armed robbery, or domestic violence in homes are not included.
Data Sets:
    US Mass Shootings, 1982-2016: Data From Mother Jones' Investigation (motherjones.com).
    As of March 18, 2017.
    This dataset originally covered 1982-2012 and has since been expanded through 2016. For more context and analysis, see our Guide to Mass Shootings in America.
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