The U.S.marked a grim milestone in2019:There were more mass shootings than there are days of the year.As of December 22,2019,there had been404 cases of mass shootings in the country,according to the Gun Violence Archive(GVA),a nonprofit organization.This is the highest number registered since the group started collecting data in 2013.The GVA defines a mass shooting as any incident that results in four or more people being shot,excluding the shooter.
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