Mahmood Mamdani is Herbert Lehman Professor of Government and Director of the Institute of African Studies at Columbia University. He is the author of "Citizen and Subject: Contemporary Africa and the Legacy of Late Colonialism" (Princeton), which won the Herskovitz prize of the African Studies Association. Among his other books are "The Myth of Population Control, From Citizen to Refugee," and "Politics and Class Formation in Uganda." He is currently President of the Dakar-based Council for Development of Social Research in Africa (CODESRIA).