The Mass Shooting Tracker is a crowd-sourced database of U.S. mass shootings. We define a “mass shooting” as a single outburst of violence in which four or more people are shot. This is not the same as mass murder as defined by the FBI. Learn more here.
Unidentified (domestic violence shooting)
Unknown (victims included 4-yr-old boy)
Ruben Houston III (victims included fireman & bystander)