[The Conversation Africa] Germany was a significant - and often brutal - colonial power in Africa. But this colonial history is not told as often as that of other imperialist nations. A new book called The Long Shadow of German Colonialism: Amnesia, Denialism and Revisionism aims to bring the past into the light. It explores not just the history of German colonialism, but also how its legacy has played out in German society, politics and the media. We asked Henning Melber about his book.