“…What is commonly referred to as Urban Art has its most remote origin in a set of social dynamics and aesthetic expressions, markedly informal, disruptive and ephemeral, which have been amply documented in specialist literature (Campos, 2013, 2015; Castleman, 1982; Cooper and Chalfant, 1984; Ferrell, 1996; Lewisohn, 2008; Macdonald, 2001; Waclawek, 2011). The more recent literature has been describing a somewhat radical change in this situation, consisting of a growing legitimation, commodification and artification of these urban expressions (Austin, 2010; Bengtsen, 2014; Campos, 2015; Evans, 2016; Kramer, 2010; Schacter, 2014).…”