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Mass Murder with Firearms: Incidents and Victims, 1999-2013

Published Jul 30, 2015Updated Jun 21, 2025

The Congressional Research Service is a nonpartisan policy and legal analysis arm of the Library of Congress. CRS reports are written for members of Congress and their staff, not the public — but they’re made available openly through Congress.gov.

Mass Murder with Firearms: Incidents and Victims, 1999-2013 — Informed