I knew Rwanda in the time of the genocide against the Tutsi. I covered the wars in Angola, Eritrea and Burundi. I mobilized against the genocide in Darfur and the massacres in the Nuba mountains, for Christians persecuted in Nigeria and for the antiapartheid militants of South Africa. I stood on the side of the Algerian people when the Islamist groups were killing them off, and I supported the democratic aspirations of Libyan civil society. I also have fond memories of a lively and happy Africa, from Abidjan, Ivory Coast, to Dakar, Senegal; from Lusaka, Zambia, to Nairobi, Kenya. I have a message to Africa—one inspired by friendship, respect and my history of supporting your fight for justice and your…