Put simply, yes.

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Here's what you need to know about the prevalence of "active shooter incidents" in the United States. (Osman Malik and Sarah Parnass/The Washington Post)

The FBI defines an “active shooter incident” as one where “[individuals are] actively engaged in killing or attempting to kill people in a … populated area.” They do not include incidents involving domestic violence, controlled situations or drug- and gang-related incidents. In 2014, the FBI along with Texas State University and the Justice Department released a study of active shooter incidents since 2000.

The FBI found a trending increase in the prevalence of these incidents. Average casualties per year had risen as well.

But these stats are relatively recent. The study did not look at incidents prior to the 21st century.

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