Abstract. The paper presents a brief overview of how social media can influence minority interactions by focusing at their features. Starting from the notion of “active minority” (Moscovici, 1981) the aim of the study is to understand how participants of a social mediated community face a critical event by focusing at socio-psychological dimensions that affect their “on line resilience” and how they promote their “social empowerment”. At this purpose was performed a quanti-qualitative analysis - lexicographic and content analysis by means of a software called Taltac (Bolasco, 2013). Results pointed out different socio-psychological processes (self-definition, trust, emotions and values) before and after critical situation emerging by on line discussions. Keywords. Active minorities, resilience, political participation, social media