Pierre Cassen (born 24 January 1953) is a French writer and the founder of the anti-Islam news portal Riposte Laïque.
[1][2] Cassen is described as an old Trotskyist and former member of the Revolutionary Communist League (LCR),[1] and was a typographer and a former trade unionist for the General Confederation of Labour (CGT).
[3] He has said that his aim with Riposte Laïque, founded in 2007, is to create a new web-based journal as a forum for the defence of secularism, particularly against the threat from Islam.
[5][6] In 2014, he was invited by Swiss People's Party parliamentarian Oskar Freysinger to give a talk titled "Islam: A danger for our democracy?".
[6][9][10] He has been a close associate of Florian Philippot, president of The Patriots party,[11] while supporting Éric Zemmour in the 2022 French presidential election.