From The New American:
John Lott, head of the Crime Prevention Research Center, exposed the error on Wednesday in his report “How the FBI Undercounts Armed Citizen Responders to Mass Killers — and Media Play Along.” He reported that the FBI showed that only 11 out of 252 active shooter incidents in its database were stopped by an armed citizen.
But the FBI undercounted the number of incidents they collected between 2014 and 2021. According to Lott’s research, there were a total of 281 active shooter incidents, and 41 of them were stopped by armed citizens.