Mass Outcome or Mass Intent? A Proposal for an Intent-Focused, No-Minimum Casualty Count Definition of Public Mass Shooting Incidents

In this commentary, we propose a unifying public mass shooting definition that captures the generally conceptualized phenomenon but also expands the inclusion to all incidents regardless of casualty count. We suggest that public mass shootings be broken down into four outcome categories – completed, attempted, failed, and foiled – which have unique incident outcomes but share a common thread of mass intent. We argue for the importance of a no-minimum casualty count definition (thus including zero casualties) that emphasizes mass intent rather than the completion of the shooting. We highlight the value of and rationale for this definition by discussing the limitations of current victim criteria, and we conclude with a proposed strategy that emphasizes objective indicators of mass intent.