Culture, in its sociological sense, results from a dialectic, an ongoing process, between symbolic systems and sets of individuals, on the one hand, and between individuals themselves and communities themselves on the other; in so being, it is information and communication. In societies highly defined by mass media, this dialectic operates in a continuous movement; but its momentum is also plural and this plurality brings into question the mere possibility of social identity. Operates, though, another dialectic, that one between homogenisation and differentiation. Media constitute one of the most determining factors of symbolic systems, and so, of identities. The messages they send are subject to a variety of competitive constraints, including those of economic and demographic nature, but as well those of perceptions and of the dialectic between message producers and receivers. A community, in contemporary times, can reproduce itself insofar as it is developing within this complexity. That is what we will intend to illustrate in this paper by emphasizing on Canadian Francophonia.