This lecture discusses the challenges of urban development in refugee camps and favelas, focusing on the case studies of a new camp in Greece and postcolonial heritage in Rio de Janeiro. It covers issues such as overcrowding, lack of resources, and social tensions, as well as the impact of fires, environmental degradation, and inadequate infrastructure. The instructor explores the socio-cultural dynamics, security concerns, and resistance movements in these marginalized communities, highlighting the complexities of urban planning and the need for sustainable solutions amidst political uncertainties and global events.