Sébastien is a trained historian and postdoctoral fellow at the International Research College (IRC) of the Cluster of Excellence “SCRIPTS” – Contestations of the Liberal Script. He is also associated with the Centre for Queer History at Goldsmiths, University of London. He obtained his PhD at the DFG Graduate School for Global Intellectual History at the Friedrich-Meinecke-Institute in 2020. His dissertation focused on the pink triangle as a symbol of transatlantic identities and the discursive importance of National Socialism for LGBTQ+ social movements in the transatlantic world. His past and present research deals with queer temporalities, the relationship between collective memory, violence and utopias, as well as the significance of the visual for a transnational history of ideas. He is currently working on his first monograph: A Badge of Injury: The Pink Triangle as a Global Symbol of Gay and Lesbian Identities. At SCRIPTS, he is affiliated with the Research Unit ‘Borders’ where he studies the consequences of queer temporalities and progressive narratives for border-making in Western Europe, examining the portrayal of the ‘other’ in the German queer imaginary.