RIO DE JANEIRO, BRAZIL - MARCH 27:  Wellington Vinicius da Silva, 19, who is homeless, poses in a park where other homeless gather in the West Zone on March 27, 2015 in Rio de Janeiro, Brazil. He says he has lived on the street for one year. A Rio government report from 2013 stated that 5,500 people live on the streets in Rio, not including those who live in shelters or lack stable housing. Close to 40 percent of the street dwellers in the study were found to lack identification, limiting their access to public services.  (Photo by Mario Tama/Getty Images)