For more than a decade a vicious civil war has torn the fabric of society in the West African country of Sierra Leone, forcing thousands to flee their homes for refugee camps and others to seek peace and asylum abroad. Sierra Leoneans have established new communities around the world, in London, Paris, New York, Washington, D.C., and elsewhere. Yet despite the great geographic range of this diaspora and the diverse ethnic backgrounds among Sierra Leoneans settled in the same communities abroad,...