In Early Modern Rome, public ceremonies were distinguished by a complex interplay of gestures, symbols, and meanings of religious and political connotation. While historiography has extensively analyzed ceremonies as an instrument of representation and legitimation of papal power, the active participation of secular representatives and religious minorities remains a crucial, yet understudied, aspect. This paper examines the performative strategies adopted by the Popolo Romano, the municipal representative of the Roman nobility, during public ceremonies that were performed within the urban space, comparing it with the role of the Jews. Indeed, the civic authority was not a mere spectator of public festivals, but it utilized ceremonies to negotiate its political status and reinforce its identity. Recent studies proved how the municipal élite participate in influencing the transformation of the city's scape through ephemeral architectures, such as triumphal arches, which served as physical manifestations of its loyalty to the pope, but also as an instrument that consolidate its identity. Thus, the paper aims to analyze the role of the Popolo Romano during the ceremonies made for the papal succession (such as the possesso), and other important religious event such as canonizations and sacred celebration. In this analysis a special importance will be given to the active role of the municipality in the construction of the ceremony. Furthermore, the role of the Popolo Romano will be compared with that of the Jewish community. For example, during the Possesso, the Jewish presence was codified into a ritual of subjection, yet it remained an essential component and actor of the ceremony.