What is to be Done? Climate Crisis and Political Activism: From a theoretical perspective, there seems to be widespread agreement about the extent, the causes, and the dire consequences of the climate crisis. Such consensus is absent, however, with regard to the practical-political question: what is to be done? Even if it seems obvious that a fundamental and global change of the economic and political system — a revolution of the whole mode of living — is necessary, it is unclear how exactly this can be achieved. What are the necessary and legitimate forms and means of such a transformation? To what extent are new forms of protest needed to respond to the urgency of the situation? What forms of disobedience and disruption or adaptation and moderation are necessary?