Ten years ago this month, an American-born priest named John Kaiser traveled from his parish in Lolgorien, Kenya, to Nairobi, the capitol, to testify before the Akiwumi Commission, a tribunal established by then-President Daniel arap Moi to investigate the causes of the tribal violence that was tearing the nation apart.Kaiser's testimony implicated several Kenyan government officials, including Moi. A year and a half later, Kaiser's body was discovered in a ditch beside a major highway. The back