Contemporary practices and conflicts of cultural heritage preservation reflect shifting conceptions of what heritage is and what it should conserve. As such, the traditional notion of graffiti upon national monuments is currently being called into question, and within the context of this debate, this study argues that the emerging framework of intangible heritage is a useful model for reconsidering graffiti at heritage sites. Arguments for such graffiti as intangible heritage are particularly strong when it can be shown to function as a societal mirror that reflects political climates and protest activities. Such graffiti poses tensions between traditional theories and practices of heritage preservation, in which these markings are seen to interrupt conservation, and emerging inclusive models such that view these works as relevant layers of a site's history. Within this context, we explore the case of the political graffiti on the north wall of a historical monument, the Iglesia de San Francisco in Santiago, Chile, through the lens of the emerging field of intangible heritage.