Notes
1. Charleston Church Shooting (2015), San Bernardino (2015), Orlando Nightclub (2016), Congressional Baseball Shooting (2017), Pittsburgh Synagogue Shooting (2018), Escondido Mosque Fire and Poway Synagogue Shooting (2019) and El Paso Walmart Shooting (2019). The two in BOLD were by Islamists who did not appear Caucasian.
2. Italics in text.
3. Eric Lichtblau Apuzzo and Matt, “Orlando Gunman Was on Terror Watchlist, F.B.I. Director Says,” The New York Times, June 13, 2016. https://www.nytimes.com/2016/06/14/us/omar-mateen-fbi.html(accessed September 22, 2019); Ben Kesslen, “Grandmother Averts Mass Shooting by Bringing Grandson to Hospital after Threats,” NBC News: U.S. News, April 5, 2019. https://www.nbcnews.com/news/us-news/grandmother-averts-mass-shooting-bringing-grandson-hospital-after-threats-n1039226 (accessed September 22, 2018); Shimon Prokupecz, “FBI Says it Didn’t Act on Tip about Parkland Shooter,” CNN: Politics, February 17, 2018. https://www.cnn.com/2018/02/16/politics/parkland-shooting-fbi-tipster/index.html (accessed September 22, 2019); and Joel Rose, “Early Warning Signs For Dayton Shooter,” National Public Radio: Morning Edition, August 7, 2019. https://www.npr.org/2019/08/07/748972038/early-warning-signs-for-dayton-shooter (accessed September 22, 2019).