This thesis analyses, in the context of different historical moments, proactive artistic interventions in audiovisual media in order to discover, compare and understand their role as social shakers and their contribution to development towards sustainability, in particular by analysing: The first sculptural treatments of television sets in the late 50s; various facets of the contracultural video in the 60s and 70s; pirate TV movements and tactical interventions in mass media that flourished since the 90s, and more recently the wide proliferation of community audiovisual networks in the various social and technological fields. Those practices are influenced by the ambiguous semantic field that the television media has acquired since the second half of the 70s, to which we refer here to the concept of ‘TM’, the radius of which expands as a common thread throughout the historical period covered by that thesis. Thus, from the 50s to the present, it has been analysed how, in the relationships established between trends in the social fabric and proactive audiovisual practices, various methods, attitudes and nuances have been shaped, reflecting constant and variable factors over that period. The analysis of all this leads us to a field of artistic and cultural activity which acts as a form of ‘media-ecology’ on collective imagination, which is at the same time our mental environment. Bittner, G. (2011). De Manifesto spaziale per la Televisione 1952, 1 GATT.ORG, 2008 and Accessible Canal, 2006: analysis of the transformations of proactive practices in audiovisual media and their interrelation with the social and media context [Tesis doctoral not published]. Universitat Politèca de València. https://doi.org/10.4995/Thesis/10251/9685