Thousands of activists from diverse environmental and social movements took to the streets of Belém, Brazil, during the United Nations Climate Change Conference (COP30), marking the largest protest day of the annual summit. Demonstrators, clad in symbolic attire, marched approximately 4 kilometers along a route passing the conference’s main venue. Some wore black dresses to symbolize a funeral for fossil fuels, while others donned red shirts representing the blood of environmental defenders. Chants, massive flags, and protest signs filled the air as activists called for urgent climate action.