To understand the genocide and other dramatic events of Rwanda's recent past, one must understand the history of the earlier realm. Jan Vansina provides a critique of the history recorded by early missionaries and court historians and provides a bottom-up view, drawing on hundreds of grassroots narratives. He describes the genesis of the Hutu and Tutsi identities, their growing social and political differences, their bitter feuds, revolts, and massacres, and the relevance of this dramatic history to the post-genocide Rwanda of today.