CIVIC ACT 2 project is the fruit of a partnership between the University of Paris and Sciences Po Paris. This project studies the evolution of relationships between local governments and associations and collectives in the framework of socio ecological transition. Firstly, the researchers (geographers, a socio-economist, a sociologist, a statistician, and a computer science linguist) analyzed quantitatively socio and environmental inequalities about the cities of the Great Paris. This quantitative analysis allowed them to create various classes of cities and to sample four urban territories (Paris 18e, Ivry-sur-Seine, Aubervilliers, Clamart), depending on the observed inequalities. They made monographs about the selected cities, then conducted interviews with associations, collectives, local elected representatives and local experts of the cities. The comparative approach between the four territories aims to study the specificity of civil society mobilizations depending on the socio environmental inequalities. The first exploratory results show the various types of links between local public action and mobilizations according to the inequalities of the territories. The way associations and collectives see socio environmental justice and take charge of inequalities corresponds as much to the associative skills as the answer they give at the social and environmental crisis. Plus, according to the relationships between actors of different scales (French department, local council community, city council) and to the consultation dynamic between civil society and public actors, the politicization of ecological and social issues reflects historical territorial trajectories under pressure. In this communication, we will explore the difficulties that civil society faces in the socio ecological transition, in the territories we study, and the interactions between civil society and local authorities.