Mass Attacks in Public Spaces-2019Alathari, L., Drysdale, D., Driscoll, S., Blair, A., Mauldin, D., Carlock, A., & McGarry, G. (2020, August). Mass attacks in public spaces- 2019. National Threat Assessment Center, United States Secret Service. https://www.secretservice.gov/sites/default/files/reports/2020-09/MAPS2019.pdf
This version of this publication by the Secret Service gives the most recent version of violence related to mass attacks in public spaces to understand the current prevalence and areas of concern.