This thesis presents a decolonial interpretation on the ways in which violence crosses imaginations, materialities and experiences in the city of Rio de Janeiro. It argues that violence produces and reproduces representations, forms of urban management and everyday experiences that coexist and intersect in Rio de Janeiro, as a city that seeks to build itself as post-colonial in the everyday. To this end, the thesis addresses the relationship between violence and the city through four points of contact. First, the thesis presents the concept of city-violence, from which an interpretation is built on the relationship between the material and immaterial formation of the city of Rio de Janeiro and the violent dynamics of racialization of the urban space in the historical-political context of a forged postcolonization. Then, it works with the idea of the sensible city, in which it discusses the extent to which certain processes of racialization of urban space, in their many forms and manifestations, forged urban-aesthetic regimes that distribute places and spaces for existence and circulation of bodies, perceptions, sensations, objects and subjects in the city. In the third part of the thesis, it analyzes the interpretations of violence that circulate, produce and inform the management of urban space in the city of Rio de Janeiro, based on a critical mapping of the field of knowledge and practices that forge meanings, representations and imaginations about violence in/and the city. Specifically, the thesis addresses the ways in which these interpretations produce limits, margins and silences on the relationship between race, racism, coloniality and violence in the city of Rio de Janeiro. The final chapter focuses on the imaginations, materialities and experiences of the war in the city, discussing how the concept of militarization crosses representations and experiences of the post-colonial city. This part also includes an interpretation on the counter-knowledge about war in/and the city that is produced daily and from which it is possible to glimpse insurgent intellectualities and counteraesthetics, capable of pointing out new meanings and interpretations for the relations between violence and the configurations of coloniality in the urban space. By exploring the multiple connections between violence and the city of Rio de Janeiro, this thesis aims at offering an original theoretical contribution to the field of International Relations that studies the dynamics of violence within cities in contexts of post-colonization, arguing for the necessity of building new epistemic and decolonial possibilities to study the realtions between violence, the city and (post-)coloniality.