Various narratives spread on digital platforms have claimed that five French churches were set on fire by Muslim citizens on October 17, coinciding with protest demonstrations held in various small towns. As documented by the broadcaster France 24, verifications of the multimedia content have established that such accounts are entirely based on visual elements unrelated to the alleged events or taken out of context. Among the shared posts are footage geolocated in Lyon concerning a burning dumpster and videos of an old fire recorded in Bordeaux last summer.

Additional messages that went viral linked the accusations to a photograph of the 2019 fire at the Parisian church of Saint-Sulpice. The Religious Heritage Observatory clarified to the French news outlet that no fire recorded around that date can be attributed to Muslim believers. The only confirmed incident during that period involves the church of Saint-Médard in Fenouillet, near Toulouse, whose causes remain undetermined according to statements by the local administration released on October 21.

Representatives of the observatory recalled that across the national territory, fires affecting religious buildings range between twenty and thirty per year, often caused by routine maintenance issues. However, the same association reported acts of vandalism that occurred on the sidelines of the October 17 marches, including graffiti on the building of Sainte-Marie-Madeleine des Chartreux in Marseille.

In 2025, the Ministry of the Interior recorded eight hundred and forty-three anti-Christian acts, representing thirty-four percent of the total actions against religious sites, with an increase of nine percent compared to the previous year. Eighty-seven percent of the cases involve material damage and break-ins.