Most mass shooters show warning signs before attacks, study finds

By: Amanda Watford

Outlets: Stateline

Published: June 15, 2026

Words: 563

Last Updated: 1 month, 1 week ago


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People who carry out mass public shootings often display observable warning signs long before an attack, but those signals are frequently fragmented across friends, family members, coworkers and institutions, making them difficult to piece together, according to a new study from the Regional Gun Violence Research Consortium at the Rockefeller Institute of Government, a nonpartisan public policy think tank.

The report, which analyzed a sample of 171 mass public shootings in the United States …

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