This paper reports results of an empirical research which aimed to identify strategic principles of intervention in favor of collective action protest. Our literature review highlights two needs for knowledge : 1. identification of sociopolitical intervention strategies supported by theoretical and empirical considerations, and 2. contextual phenomena which influence the choice of these strategies. The achievement of 27 monographs on social struggles allows identifying middle range strategies and those processes that lead actors to carry out plans that were not always planned at the starting point. In conclusion, the author retains certain principles of his observations to any professional organizer to become more strategic.