In recent years, the European Commission (EC) has used various forms of public demonstrations, including technological demos, to manage its research and development programs. Based on sociological observations of one of these programs in the field of information technologies, this chapter shows how a “demo-cracy”—a regime using public demonstrations for the management of public affairs that gives significant power to efficient demos, talented demonstrators, and the institutions that employ them—has developed at the EC level and beyond. It also helps reveal the character of cultures of public demonstrations operating at the EC level and, more generally, throughout the industrial world.