https://www.nytimes.com/interactive/2022/06/22/us/shootings-police-response-uvalde-buffalo.html

https://www.nytimes.com/interactive/2022/06/22/us/shootings-police-response-uvalde-buffalo.html

gun rights advocates often push to arm more people, citing prominent examples where a “good guy with a gun” stopped a “bad guy.”
A "good guy with a gun" stopped a "bad guy" on average less than 3% of the time in active shooter situations in 433 events through 2021.