Introduction. The radical transformations of recent decades have significantly changed the lives of ethnic groups like the Udis. Due to their small numbers and poor degree of protection, ethnic groups are the first to feel tension, crises, and conflicts in society, the sequelae of political, social, economic, and cultural modernization, and growing risks and threats in the global world. Methods. The systematic method made it possible to determine the contradictory and conflicting nature of modernization taking place in post-Soviet societies. The dialectical approach, the principle of unity in diversity, as well as the synergetic approach have revealed ambiguity, dynamism, and conflict in the emergence of both ethnic and general cultural identity. Analysis. Studies of the real state of post-Soviet societies have shown the unbalanced and diffuse nature of modernization, the ambiguity of the present, and uncertainty of the future. Considering the Volgograd region, the authors point out relatively stable interethnic and interdenominational relations. Simultaneously, it was revealed that the absence of a national ideology and common objectives and values problematize the issues of the joint existence of nations and ethnic groups, and hamper the search for a common cultural identity. Results. The paper reveals the complex nature of the dynamics of heterogeneous Russian society and the inadequacy of calls for unity and integration of peoples while the society continues to be fragmented, polarized, and its citizens being alienated and atomized. The agenda for national minorities and ethnic groups includes issues of determining genuine national interests by the authorities, the formation of an all-Russian identity, and patriotism as the basis of stability and sustainable development of the country. The complex environment of social communication is replete with various multifaceted processes and influences that will allow representatives of ethnic groups to become carriers of common rules, common moral norms, and cultural meanings, values, traditions and customs. Authors’ contribution. As a representative of the Udis ethnic group, R.A. Danakari considered the sociopolitical existence of his native ethnic group. The author argues convincingly that modern forms and types of modernization destroy the “life world” and traditions of most Udis, leading to marginalization, i.e., loss of origins and roots, as well as assimilation and acculturation. V.Yu. Podurueva-Miloevich focused on the political dynamics and psychological characteristics of the rapid transformation of the modern world. As a result, the author reveals the inability of most minor ethnic groups to adapt to postmodernity, to make the transition to a new identity, and to achieve self-realization.