In recent decades, a number of studies have appeared, mainly in the Western European police literature, which have examined the role of the police in society, the social utility of their operations and the social trust factors achieved throug the effectiveness of their procedures. These studies have revealed a number of factors which, although indirect, can be measured and understood. Nevertheless, they have hitherto been treated as abstract concepts in scientific approaches. These include the legality, legitimacy and fairness of police actions and procedures. In this study, I will show that the police can have a significant impact on social capital if they focus on these factors. In particular, it can improve that by focusing on aspects of procedural justice in measuring organizational effectiveness. However, the malleability of trust is questionable in a society where the overall level of trust is already low.