“…Security threat groups, colloquially known as prison gangs, develop, by definition, in confinement, but sometimes go on to expand into the free world. In particular, U.S.-based Hispanic and Latin American prison gangs, which often contribute to prison governance structures, have, in certain circumstances, evolved to underwrite the protection rackets that underpin criminal underworlds on the outside (Skarbek, 2014), typically via the drug trade (Bunker & Sullivan, 2013; Cruz, 2010; Dias & Darke, 2016; Dias & Salla, 2013; Dudley, 2011; Fontes, 2016, 2018; Grillo, 2011; Kan, 2012; Logan, 2009; Manwaring, 2007; Rodet, 2016; Santamaría, 2013; Savenije, 2004; Sullivan & Bunker, 2002; Willis, 2009; Wolf, 2010). While such initial, in-prison development and subsequent expansion into the free world are of interest to the literature (Ouellet, Bouchard, & Charette, 2018), the mechanisms driving them remain largely unexplored.…”