This is a document of work to promote the associative movement of drug users (Catalonia-Spain). It is part of the preliminaries of a qualitative and participative research (Action Plan on drugs of Reus-ARSU) . We took advantage of the participation in various conferences related to harm reduction to select informants during 2009-2010. The speeches selected are related to the following topics: searches for references, macro-analysis, experiences and contributions to the social movement of drug users, peer work, networking and activism. The field work of this video document have been performed by Plataforma Drogológica (Catalan drug user's network). A reflection to debate beyond the prohibition from the perspective of human rights.