harare zimbabwe former vice president emmerson mnangagwa due swear replace robert mugabe president friday tell cheer crowd harare wednesday country enter new stage democracy people speak voice people voice god mnangagwa tell thousands supporters gather outside rule zanu-pf party offices today witness begin new unfold democracy mugabe resign zimbabwe president tuesday week army former political ally move end four decades rule man fete independence hero become fear despot `` people speak `` zimbabwe 's mnangagwa tell cheer crowd