`titrebEphemereal manifestos : anti-sexist graffiti in the Paris metro `/titreb This article proposes to study a part of the anti-advertisement graffiti phenomenon, through an inquiry carried out within an anti-sexist action group operating in the Paris metro. Confronted by the multiplication of advertisements in the public space, some women have mobilized to fight against advertising on its own ground. What sort of relationship between the citizen and the public space is involved in the production of these graffiti? The metro appears as a real and symbolic space for struggle, where strategies of graphic combat are organized. But these writing actions also propose a new relationship to the street and to the metro, not as spaces for traffic alone but as spaces for communication and civic implication.