Guillaume Marche is a professor of North American studies at the University of Paris-Est Creteil (France). His publications deal with contemporary social movements in the United States – mainly the LGBTQ movement. His research focusses on sexual identities, subjectivity, and the interplay between the cultural and political dimensions of collective mobilization. His recent research also addresses infrapolitical forms of intervention in public spaces in San Francisco – e.g. graffiti, murals, urban greening, LGBTQ theatricality, public nudity – and the use of biographies and memoirs of militancy in social movement sociology. He is the author of Sexuality, Subjectivity, and LGBTQ Militancy in the United States (Amsterdam University Press, 2019). He is a member of the research working group “IMAGER” (Institute for the study of English-, German-, and Romance language-speaking spheres) at the University of Paris-Est Creteil.