The article aims to analyse, through the theoretical-empirical perspective of green criminology, the context of the so-called Sicilian “transformed strip”, an area in the province of Ragusa where the transition from traditional agriculture to intensive greenhouse farming has triggered a series of socio-economic, environmental and landscape changes that have altered the human and physical environment. The development of environmental crimes, especially the illicit disposal and burning of plastic materials, is causing serious harms that grassroots mobilisations are trying to highlight. By means of action-research carried out in the field, the article therefore aims to deepen the process of social and political construction of crime and harm, through an in-depth study of the action repertoires of an environmental committee.