“…The aim of this study is to determine whether patterns of far-right radicalization in the United States are consistent with a contagion process, and to assess the influence of critical endemic factors. After controlling for population density, I assessed the following endemic factors that have been implicated in previous research on radicalization, extremism, and mass shootings: poverty rate (Durso and Jacobs, 2013;Gale et al, 2002;Kwon and Cabrera, 2019b;Lin et al, 2018;Medina et al, 2018;Piazza, 2017;Suttmoeller et al, 2015Suttmoeller et al, , 2016Suttmoeller et al, , 2018, unemployment rate (Espiritu, 2004;Gale et al, 2002;Goetz et al, 2012;Green et al, 1998;Jefferson and Pryor, 1999;Majumder, 2017;Pah et al, 2017;Piazza, 2017), income inequality (Goetz et al, 2012;Cabrera, 2017, 2019a, b;Majumder, 2017;McVeigh, 2004;McVeigh and Cunningham, 2012), education levels (Durso and Jacobs, 2013;Espiritu, 2004;Florida, 2011;Gladfelter et al, 2017;Cabrera, 2017, 2019a;McVeigh et al, 2014), non-white population size (Gladfelter et al, 2017;LaFree and Bersani, 2014;McVeigh, 2004;Medina et al, 2018), violent crime rate (Gladfelter et al, 2017;McVeigh and Cunningham, 2012;Sweeney and Perliger, 2018), gun ownership (Anisin, 2018;Lin et al, 2018;…”