The article provides an ethnographic study of the lives of the ‘dangerous class’ of drug users based on fieldwork carried out among different drug using ‘communities’ in Tehran between 2012 and 2016. The primary objective is to articulate the presence of this category within modern Iran, its uses and its abuses in relation to the political. What drives the narration is not only the account of this lumpen, plebeian group vis à vis the state, but also the way power has affected their agency, their capacity to be present in the city, and how capital/power and the dangerous/lumpen life come to terms, to conflict, and to the production of new situations which affect urban life.