In recent years, it seems Western Pennsylvania has seen more than its fair share of mass shootings. • LA Fitness in 2009. • Western Psych in 2012. • Wilkinsburg in 2016. • Tree of Life in 2018. • ...

There is no consensus among organizations that track shootings in the U.S. about the definition of "mass shooting" Twenty-one shot dead in Uvalde, Texas. Ten in Buffalo, N.Y. Four in Tulsa, Okla.

There is no universal standard for what constitutes a mass shooting, potentially causing discrepancies in data and research among authorities and experts -- and confusion for the average person. "Some ...

Wednesday’s massacre in San Bernardino was the latest mass shooting in America. By some counts — including a heavily cited version — it was the 354th of the year. By a narrower definition, it was the ...

Mourning and outrage have shaken the nation as mass shootings continue to mark some of the latest chapters of a long history of gun violence across the United States. As Americans grapple with these ...

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A shooting that took place in Midtown Atlanta on Wednesday has sparked a debate on whether it should be labeled as a mass shooting. While the mayor of Atlanta and other Georgia officials are referring ...

On Monday morning, many in social media and the news reported that the Las Vegas tragedy is the United States' 273rd mass shooting of 2017. The factoid was widespread throughout Twitter, mentioned on ...

A high-profile act of violence occurs, and lots of terms immediately get thrown around. "Terrorism." "Mass shooting." "Mass casualties." What do they all mean? Well, none of these terms or phrases ...

Depending on how you're counting, the shooting deaths of 14 people in San Bernardino, Calif. Wednesday was the 22nd mass shooting this year, or one of more than 300 in a near-daily epidemic. Big ...