Protest movements have successfully adopted media technologies to promote their causes and mobilize large numbers of supporters. Especially social media that are considered as low-cost and time-saving alternatives have played particularly important roles in recent mobilizations. There is, however, a growing concern about the contradictions between long-term organizing for progressive, social change, on one hand, and the media technologies employed, on the other. Hartmut Rosa has argued that the current culture of accelerated capitalism is characterized by a growing desynchronization between political practices (slow politics) and the economic system (fast capitalism). This article traces the increasing social acceleration related to (media) technologies employed by protest activists and asks whether there is an increasing desynchronization with their political practices discernible. Furthermore, the article investigates strategies of resistance to overcome the growing gap between ‘machine time’ and political time. Empirically, the article builds on archival material and in-depth interviews documenting the media practices of the unemployed workers’ movement (1930s), the tenants’ movement (1970s) and the Occupy Wall Street Movement (2011/2012) and argues for the need to re-politicize media infrastructures as means of communication in order to tackle democratic problems that emerge from the divergent temporalities.