Background: In July 2021, in France, the hashtag "#NousSavons" ("#WeKnow") emerged, aimed at rallying COVID skeptics on Twitter. Creating a genuine online community, this hashtag mobilized its members by having them question dominant forms of knowledge. This article examines the architecture of the discourses developed by the members of the #NousSavons community.Analysis: The analysis considers two of this community's initiatives that supported a conspiracy-based perception of COVID-19: establishing the legitimacy of their perception of the crisis and publicizing this perception.Conclusions and implications: This article shows the diversity of evidence put forward by the community as well as the latter's singular positioning with regard to the truth. It also analyzes the refinement of the communication practices that were implemented in order to convince members of the public sphere of the legitimacy of their viewpoint. Contexte : En juillet 2021, en France, le mot-clic #NousSavons regroupe les sceptiques de la COVID-19 sur Twitter. Reel cluster, ce mot-clic positionne la mobilisation directement sur le plan du savoir. Cet article examine l'architecture du discours que composent les membres de la communaute #NousSavons.Analyse : L'analyse prend en compte deux productions de cette communaute qui viennent soutenir une perception complotiste de la COVID-19 : la mise en place de gages de legitimite devant confirmer leur perception de la crise et la mise en visibilite de ces gages.Conclusions et implications : Cet article montre la diversite des preuves mises en place par la communaute ainsi qu'un positionnement singulier eu egard a la verite. Il analyse egalement le raffinement des pratiques communicationnelles mises en oe uvre dans le but de convaincre les membres de l'espace public.
