With several national incidents of mass murders in the headlines this year, a number of reports have appeared alleging that domestic violence is a precursor to mass shootings. The histories of many of the shooters would seem to support this.

Devin Patrick Kelley, the man who killed 26 people in Sutherland Springs, Texas in November 2017, had a history of domestic violence. In 2012, he was convicted on charges of domestic violence and was dishonorably discharged from the Air [...]