America loves its gun. The big draw of this piece from the Washington Post is the illustration of the guns used in the mass shootings and whether each was legally or illegally acquired. But more interesting from a data visualisation standpoint are the charts below. They show the numbers of killers, victims, and then the demographics of the killers.
Credit for the piece goes to Alberto Cuadra, Richard Johnson, Todd Lindeman, Ted Mellnik, and Kennedy Elliott