'''9.''' Frequently tend to kill out of revenge/bitterness/unforgiveness/anger (see: [[Atheism and bitterness]] and [[Atheism and forgiveness]] and [[Atheism and anger]] and [[Atheism and love]]).<ref>[https://defensemaven.io/bluelivesmatter/news/fbi-study-identifies-warning-signs-of-future-mass-shooters-_5dqHxwP80CM-fKXsvx7WQ/ FBI Study Identifies Warning Signs Of Future Mass Shooters]</ref><ref>[https://www.psychologytoday.com/us/blog/evil-deeds/201110/anger-rage-and-pathological-embitterment-what-motivates-mass-murders Anger, Rage and Pathological Embitterment: What Motivates Mass Murders?] by Stephen A. Diamond Ph.D., Psychology Today</ref> | '''9.''' Frequently tend to kill out of revenge/bitterness/unforgiveness/anger (see: [[Atheism and bitterness]] and [[Atheism and forgiveness]] and [[Atheism and anger]] and [[Atheism and love]]).<ref>[https://defensemaven.io/bluelivesmatter/news/fbi-study-identifies-warning-signs-of-future-mass-shooters-_5dqHxwP80CM-fKXsvx7WQ/ FBI Study Identifies Warning Signs Of Future Mass Shooters]</ref><ref>[https://www.psychologytoday.com/us/blog/evil-deeds/201110/anger-rage-and-pathological-embitterment-what-motivates-mass-murders Anger, Rage and Pathological Embitterment: What Motivates Mass Murders?] by Stephen A. Diamond Ph.D., Psychology Today</ref> |