A reveller of Unidos de Vila Isabel samba school performs during the first night of Carnival parades at the Sambadrome in Rio de Janeiro on March 7, 2011. Rio's two nights of famously extravagant Carnival parades began late on March 6 in a burst of fireworks and to the cheers of festival goers who have been partying on the streets for days. The processions, featuring near-naked dancing queens, spectacularly imaginative floats and thousands of extras, were being held before a stadium crowd of 70,000 and an international broadcast audience...
