FBI active shooter data
Reviewing baseline research is important to understand methdology, terms used, and conclusions. If you haven’t seen it, it’s worth a read or review of the FBI’s initial research into active shooter incidents, 2000 to 2013. This confirmed the rising trend of these incidents. https://www.fbi.gov/file-repository/active-shooter-study-2000-2013-1.pdf/view The FBI continues to track these incidents, releasing recently a 20-year review.