The U.S. Secret Service National Threat Assessment Center has released a report, Mass Attacks in Public Spaces – 2017. The study focused on 28 incidents carried out in public places in the United States in 2017 during which three or more persons were harmed. The report takes an in-depth look into the commonalities of the attackers which include location of attack, weapons used, gender, age, substance abuse, criminal history, mental health, motives, targeting, stressors, and communications. NTAC examined the incidents…