How are mass shootings and domestic violence linked?

As law enforcement tries to figure out what led to Sunday’s attack at a Baptist church in rural Texas, debate over preventing mass shootings continues. In more than half of mass shootings, one of the victims was an intimate partner or relative of the shooter. In the Texas case, the shooter was court-martialed for abusing his wife and child. And he sent threatening texts to his mother-in-law, who attended the church.