The Ambivalent State: Police-Criminal Collusion at the Urban MarginsOver the last few decades, debates about policing in poor urban areas have turned from analyzing the state's neglect and abandonment into documenting its harsh interventions and punishing presence. Yet, we know very little about the covert world of state action that is hidden from public view. In The Ambivalent State, Javier Auyero and Katherine Sobering offer an unprecedented look into the clandestine relationships between police agents and drug