Judith Butler, an American philosopher and performance theorist, sees the transformations of public sphere and democracy in the possibilities of making visible the human bodies. Butler interprets a performance as a setting boundary for belonging to a community. Public appearance requires the existence of the body and media technologies. In this way, the performative nature of political activities acquires the characteristics of biopower, according to Michel Foucault: control over the coupling of social and biological existence of man, taking into account his public visibility. Politics, by merging with what is media, obtains a performative (discursive/event) character.