After reviewing the past 30 years of “mass killings” with firearms[i], I’ve found that each shooter had one or more of the following characteristics: chronic and persistent mental health disorders; dogmatic religious ideology; dysfunctional family and/or relationships; history of being devalued and bullied; history of social isolation and/or rejection; hatred, racism and classism; feelings of hopelessness and despair after a sudden loss of employment; extreme anger and aggres