NAIROBI, KENYA - OCT. 13: Unidentified people walk in mud through the Nairobi slum Oct. 13 2011 in Nairobi, Kenya. Kibera is the largest slum in Nairobi, and the second largest urban slum in Africa Poster #349520818
NAIROBI, KENYA - OCT. 13: Unidentified people walk in mud through the Nairobi slum Oct. 13 2011 in Nairobi, Kenya. Kibera is the largest slum in Nairobi, and the second largest urban slum in Africa Poster #349520818
