The Bloco dos Sujos is a an improvised parade through the streets of the city. A band on a big rig sound truck/stage moved through the 9 or so blocks of partiers, decked out in improvised costumes many in drag, dancing to the moving party.
Camera: Canon EOS 5D Mark II
Lens: Canon EF24-105mm f/4L IS USM
Focal length: 105mm
Exposure time: 1/60 sec