Politics Isaac Bennett AFRICA, ALBERT MARGAI, ALL PEOPLE ’ S CONGRESS, BIRIWA, BIRIWA CHIEFDOM, DEMOCRACY, DIVERSITY, GASSAMA, GORAMA MENDE, GORAMA MENDE CHIEFDOM, GOVERNANCE, LEADERSHIP, MANDING, SI, SIERRA LEONE, SIERRA LEONE PEOPLE ’ S PARTY, SLPP, SOCIETY, STEVENS, WONDE SECRET SOCIETY Ethnic Politics and Chieftaincy Struggles in Sierra Leone: A Threat to National Unity