What Is A Mass Shooting? And Why We Struggle To Agree On How Many There Were This Year

Unfortunately, everyone seems to define mass shootings a little differently. Traditionally, it’s been a combination of two factors: how many people were injured or killed, and the type of violence being committed.

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Every time there’s a shooting in the United States that leaves multiple people injured or dead, a few things happen in reaction. Public officials express their condolences, there’s often a call for legislative action. And reporting begins to come out referencing how many similar shootings have taken place that year.

The problem is, you might see a few different numbers, all trying to quantify the same thing: the number of “mass shootings” during a given time.

And they’re often radically different numbers.