Massive errors in FBI’s Active Shooting Reports regarding cases where civilians stop attacks: Instead of 4.4%, the correct number is at least 34.4%. In 2021, it is at least 49.1%. Excluding gun-free zones, it averaged over 50%.

Data: For convenience, a PDF of the Excel file is also available here. FBI Active Shooting reports are available here (2000-2013), here (2014-2015), here (2016-2017), here (2018), here (2019), here (2020), and here (2021). Introduction The shooting that killed three people and injured another at a Greenwood, Indiana, …

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