The purpose of this presentation is to synthesize a sociosemiotic research on the involvement of the body in political movements through street art, analysing from that perspective the historical sex-affective manifestations. The theoretical basis is Zizek (2007), Kristeva (1974, 2013), Metz (1977), while the semiotic methodology is Del Villar’s operationalization (2001, 2016, 2018, 2022) of the imaginary implication of the visual image, which had only been operationalized at the level of the poetic language by Kristeva. The objects of the analysis are two: street art made by the communist brigade "Ramona Parra", from 1971 during the socialist government of Salvador Allende, and graffiti captured during the social movements against the market economy in 2019. By comparing two antithetic paths of body behavior, we examine the shift of energy towards the political in the first period, while in the second period they are channeled towards the emotional or imaginary. The selection of the objects of study responds to the importance of comparing two completely different states of energy, which emerge from the semiotic analysis, transiting from the dichotomic to the liquid. Each period can be interpreted symbolically based on the representation of the bodies, from which we can deduce their ways of inhabiting desire and the political, as well as how they relate to the structures of power and generate community.