The research explains the differentiated conception of the public problem between the policy makers of involuntary displacement by public works and the target population located in the sector of La Paralela de Medellín, through a disarticulated public policy network. Two methodologies were used: the causal case study and the analysis of social networks. It has been found that there is a low density in the network, which represents the infrequent or non-existent relationships between the actors that conform it (public actors, civil society organizations, academic research groups) because there are few interactions between them, influencing the differentiated conception of the public problem. To respond to the phenomenon of interest, the article was based on theoretical perspectives from the bottom up and the public policy networks that consider relevant the participation of different actors in the processes of public decision.