A personal dispute can quickly become a public nightmare, especially when guns are involved. The man who killed 26 people in a church in Texas had been convicted of domestic abuse and statistically, more than half of America's mass shootings involve a perpetrator who was violent toward a partner or relative. What is the link between domestic violence and mass shootings? If you are in a violent relationship and need help, the domestic violence hotline is 1−800−799−7233 or go to thehotline.org.