The aftermath of the murder of Kenyan political leader Tom Mboya has mocked what he stood for. Mboya, who seemed to represent all that was modern in Africa to the rest of the world, always shunned the appeals to tribal allegiance that have crumbled political stability elsewhere in Africa. His constituents were mainly the urban workers groping for a modern way of life. Yet his assassination on the first Saturday in July, 1969 unleashed intense tribal hatreds. Kenya faces a long and dangerous period of instability unless the government can somehow placate his grieving Luo people.