Revelers dance at a Jacarezinho samba school practice session ahead of Carnival celebrations on February 16, 2014 in Rio de Janeiro, Brazil. The Jacarezinho “favela” was previously controlled by drug traffickers and is now occupied by the city's Police Pacification Unit (UPP). Carnival officially begins February 28, but pre-Carnival celebrations are already underway. (Photo by Mario Tama/Getty Images)

Drums queen Thalia Cristina walks into an office space at a Jacarezinho samba school practice session ahead of Carnival celebrations in Rio de Janeiro. (Photo by Mario Tama/Getty Images)

A young resident wears a Carnival mask inside a formerly deserted bullding which is currently occupied by 82 families in the port district in Rio de Janeiro. (Photo by Mario Tama/Getty Images)

A family watches as revelers march in the first street parade of the Carnival season in Rio de Janeiro. (Photo by Mario Tama/Getty Images)

Members of the Imperatriz Leopoldinense samba school dance at Samba City in Rio de Janeiro, Brazil on February 13, 2014. Imperatriz Leopoldinense's theme for this carnival is a homage to Zico. (Photo by Vanderlei Almeida/AFP Photo)

Revelers gather at the first street parade of the Carnival season through the historic Afro-Brazilian port district during the Circuito da Liga Portuaria parade in Rio de Janeiro. (Photo by Mario Tama/Getty Images)

Dancers of Uniao da Ilha do Governador samba school perform during their rehearsal on a street in Rio de Janeiro, Brazil on Februrary 12, 2014. Rio's carnival will be held on March 2 and 3, 2014. (Photo by Yasuyoshi Chiba/AFP Photo)