[ButThreeLeftsDo]

“...mass shooting...”

I didn’t see that in the article.

[dayglored]

I think the official definition of a “mass shooting” is four or more dead in a given incident.

[Blue Jays]

"...didn’t see that in the article..."

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Five people shot (with four fatalities) at the same time in the same place would be considered a “mass shooting” by most.