This Communication is the synthesis of a semiotic and ethnographic research on the social movement of protest to the liberal market model that took place in Chile on October 18, 2019, which occurs within a growing polarization between civil society and politics (Barozet, 2018). The social context of the protest has already been described by Castells (2000) and Touraine (2017); that is, the emergence of political resistance movements (Indigenous, environmentalists, feminists, without the articulation of an alternative political project, where allies / enemies are identified, as during the cold war period. Then, the sense of the research has been to describe from the semiotic point of view the graffiti and the implication projected at the imaginary level, where the contributions of Metz, Aumont, Marie and Del Villar's Operationalization of the Imaginary (2001, 2018, 2022) were used. Regarding the interviews with the executors, Claude Lévi- Strauss' algebraic formalization was used. What we sought was to discover the historical unconscious that speaks through graffiti. The forms of functioning of the image are symptoms, signifiers interpretable more by cathartic implication than by meanings, the recurrent meanings are worries-discomforts, but which fail to crystallize in political strategies, at the same time in their gestation and the political process involved, structures of affect reconstituted through research are developed.