Kelley’s history once again points to the connection between domestic violence and mass shootings. An analysis of mass shootings from January 2009 to December 2016 by Everytown for Gun Safety, a nonprofit dedicated to reducing gun violence, found that the 54 percent of mass shootings are related to domestic violence, with perpetrators shooting an intimate partner or family member. Everytown’s analysis—which defined mass shootings as incidents with four or more victims, not including the perpetrators—found that from 2009 to 2016, mass shootings connected to domestic violence resulted in 422 deaths, of which 181 were children.