Assemblies are normally held on a scale that allows for direct discussion and participation. However, during the Spanish protest camps of the 15M movement in 2011, massive assemblies defied these notions by blowing up scale, and also challenged the idea of a more or less fixed group that thinks about issues with a certain continuity. These mass assemblies, in turn, emphasized the performativity and the rituality. Julia Ramírez-Blanco addresses the potential and contradictions of those mass assemblies and discusses the evolution of the format toward a more manageable form in the neighborhood assemblies.