The Gun Violence Archive (GVA) uses a purely statistical threshold to define a mass shootings based only on the numeric value of four or more shot or killed, not including the shooter.
Soft Targets and Crowded Places (ST-CP)
The Most Comprehensive and Up-To-Date Online Data Depositary for Helping Society, the Systems, and the Venues to Learn How to Prevent Mass Shootings
The Gun Violence Archive (GVA) uses a purely statistical threshold to define a mass shootings based only on the numeric value of four or more shot or killed, not including the shooter.