The federal appeals court overturned the decision of a lower court judge who had invalidated California's ban on possession of large-capacity magazines, like the ones used in the killings at the Santa Clara Valley Transportation Authority, as well as the recent fatal shootings at a Michigan high school.

Everytown for Gun Safety, a gun control advocacy group, has kept a running tally of campus shootings since the Sandy Hook massacre that left 20 little children and six adults dead.