The contemporary sociologists' views on such issues as social identification diffusion, marginalization and decadence of national states are the subject of a current paper. Author's point of view is a bit unusual: all the above-mentioned processes are analyzed as consequences of movement in a physical space; however, the movement is no doubt a social fact (but not geographic or physical). The order of sociologists' positions examining is logical: first examined author is Zygmunt Bauman, whose works unveil the most abstract and ontological foundations of the marginalization process. Anthony Giddens and Ulrich Beck are the next: the level of their theoretical constructions is a bit more grounded. The paper is finalized with the John Urry's views analysis: his mobile sociology is crucial in the frame of current topic, however, theoretically distant from previous sociologists.