Le Street Art au Tournant is an essay on this new mode of expression, serious in its study and references but accessible to a wide audience. The central argument is that street art is currently at a crossroads between illegality and the collective imagination, between contestation and derivative. In this richly illustrated book, Christophe Genin sees street art as a global cultural phenomenon, crossed by multiple currents, even contradictory. He examines his genealogy, like his most hasty current evolutions. It addresses its conditions of existence, between the resistance of political authorities to "vandalism", and the recognition of various bodies, such as the art market or the humanities. It gives an overview of all the fields involved in street art, graphic design, cinema, performance, urban games, cultural representations, politics and tourism. Street art at the turn is based on observations of works, behavior, status, as well as meetings with many artists of various generations such as Miss.Tic, Rero or Levalet. A book to understand and love street art.