The FBI defines an active shooter as one or more individuals actively engaged in killing or attempting to kill people in a public place, not involving gang violence or some other crime such as robbery. Such an incident could be something as minor as one person being shot at and missed up to a mass public shooting.
While the FBI includes cases where civilians stop active shooters, the news media frequently relies on the limited number of these cases to argue that such interventions are rare. Headlines illustrate this framing: “Rare in US for an active shooter to be stopped by bystander” (Associated Press); “Rampage in Indiana a rare instance of armed civilian ending mass shooting” (Washington Post); and “After Indiana mall shooting, one hero but no lasting solution to gun violence” (New York Times). The FBI’s reports acknowledge that armed civilians stopped active shooting attacks in eight of the twelve years they reviewed.
When John Stossel asked the FBI about our claim that they had omitted many cases, the Bureau responded: “[Our data is] not intended to explore all active shooting incidents but rather to provide a baseline understanding . . .”
