PurposeIn recent years, there has been a growth in research aimed at understanding the foundations of modern activist communication in media-rich and multi-platform environments. For example, Chon and Park's analysis of the American Black Lives Matter (BLM) movement built on Kim and Grunig's STOPS model. Yet, social and political injustice can exist for extended periods of time without successful movements emerging, so what leads people to demand social and political change through activism? This paper posits that crisis is trigger that motivates people to activism and evaluates that within the context of the Scottish independence movement.Design/methodology/approachThe study is based on in-depth interviews with 26 advocates for Scottish independence, which yielded more than 32 h of data. Data were analysed using Strauss and Corbin's (1990) constant comparative method approach using open coding, axial coding and selective coding finding thematic saturation after only 10 interviews.FindingsThe study provides a clear extension of Chon and Park's model of activism by finding that crises are critical triggers for activism. Moreover, these findings also provide insights into not only the Scottish independence movement but more broadly the extension of traditional public relations and communication theory in multi-platform and multi-actor environments.Originality/valueThere are several contributions this piece makes. First, this paper extends activist, crisis and strategic communication research to more systematically consider the role that crisis plays in social and political advocacy. Second, this paper affords the opportunity to consider the challenges of communication, democracy and activism in the social media age. Finally, this paper supports an international view that discrimination and affective injustice experiences cut across many different kinds of identities and experiences instead of the traditionally considered ethnic, religious and gender-based experiences traditionally addressed.