The 50 analyzed incidents are a subset of a population of 173 mass attacks described in NTAC's 2023 report.
The 50 incidents analyzed in this study are a subset from a population of 173 mass attacks
Included incidents harmed three or more people, not counting the attacker(s), and occurred in public or semi-public workplaces.
These incidents resulted in harm to three or more people, not including the attacker(s)
The incidents were perpetrated in public or semi-public workplaces, including restaurants, bars, retail outlets, service centers, manufacturing and distribution facilities, healthcare settings, educational institutions, and military installations.
were perpetrated in public or semi-public workplaces, including restaurants, bars, retail outlets, service centers, manufacturing and distribution facilities, healthcare settings, educational institutions, and military installations
The study uses open sources to examine 50 mass violence incidents on the premises of a business or other work location, covering attacks and attackers' backgrounds and behavioral histories.
describes key findings of research using open sources examining 50 incidents of mass violence which occurred on the premises of a business or other work location
In each of the 50 incidents, the attackers were known or knowable to the workplace before their attacks.
In each incident, the attackers were known or knowable to the workplace prior to their attacks.
An individual is known or knowable when their identity, affiliation, or patterns of behavior are already recognized or can reasonably be identified through frequent or substantive contact with the workplace.
An individual is known or knowable when their identity, affiliation, or patterns of behavior are either already recognized (i.e., known) or can reasonably be identified (i.e., knowable) based upon their frequent or substantive contact with the workplace.
The section presents findings on the characteristics of the attacks and on the backgrounds and behavioral histories of the attackers.
We present findings on the characteristics of the attacks and the backgrounds and behavioral histories of the attackers.
Common types of individuals known or knowable to a workplace include current or former employees; regular or notable customers, clients, patients, or visitors; and current or former romantic partners or relatives of individuals connected to the organization.
Common types of individuals that are known or knowable to a workplace include:
The Known or Knowable definition box lists current or former employees; regular or notable customers, clients, patients, or visitors; and current or former romantic partners or relatives of individuals connected to the organization as common types.
Common types of individuals that are known or knowable to a workplace include current or former employees; regular or notable customers, clients, patients, or visitors; and the current or former romantic partners or relatives of individuals connected to the organization.
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