At least 15 mass shootings have taken place across the United States

At least 15 mass shootings have taken place across the United States — from California to Arizona to Tennessee — since the shooting at an elementary school in Uvalde, Tex., claimed the lives of 19 children and two teachers last week.

This Memorial Day weekend alone — spanning Saturday, Sunday and the federal holiday on Monday — there have been at least 12 mass shootings.

These incidents, gleaned from local news reports and police statements, meet the threshold for mass shootings as defined by the Gun Violence Archive, a nonprofit research organization.

GVA defines a mass shooting as one in which “four or more people are shot or killed, not including the shooter.” Several of those shootings occurred at parties, and one at a Memorial Day event.

Image description: A photo shows Kountry Queens food truck owner Tiffany Walton at the scene of a shooting at a Memorial Day event that left one dead and seven injured in Taft, Okla. Text over the photo reads: U.S. marks Memorial Day weekend with at least 12 mass shootings.