Abstract: This study examines the transformations of mass celebration events within the framework of the modern culture of participation, which is a kind of resistance to consumerism, overcoming the passivity of the viewer of screen culture. The mass celebration of the late modern era is a new platform for civic engagement, which has both productive aspects and risks. Special attention is paid to the analysis of such features of these changes, which, firstly, are acquired by modern forms of celebration in the process of these cultural transformations, and, secondly, remain stable and repeat themselves within the framework of modern mass culture from one form of celebration to another, changing only externally, but not changing in essence. A mass celebration is a cultural phenomenon following museum practices, to which the concept of a culture of participation is extrapolated. Thus, the concept of a culture of participation transcends the boundaries of political science and acquires the status of either interdisciplinary or culturological. The concept of a "culture of participation" is a methodological principle for considering and analyzing modern mass celebrations. In addition, the research is based on a number of fundamental scientific works by M. McLuhan, M. Castels, M. Horkheimer, T. Adorno, J. Baudrillard. Based on the results of the study, the initial causes and subsequent mechanisms for maintaining high rates of cultural dynamics are identified and analyzed, which collectively determine these intracultural transformational processes. In conclusion, the role of the general sociogenesis of modern mass culture in its transition to the space of information culture, which allows using its engineering, technical and technological solutions and achievements in the process of implementing new forms of online celebration, but at the same time imperceptibly changing cultural reflection and consciousness of a modern person, is considered in detail. The modern "culture of celebration" is, in fact, one of the most significant and noticeable directions of the socio-cultural formalization of the culture of participation. In the artificially created chronotope of the holiday, society opens up from the inside and completely to itself, creating truly unprecedented conditions for updating and increasing the level of its own internal integration.The existing culture of celebration assumes that most of the possibilities of a culture of participation are most actively realized in the scenario, staging and performative part of the organization of any kind of festive events or ceremonies.