NEW : Ugandan president to address parliament Monday on deadly riots . NEW : Death toll from two days of rioting rises to 21 ; 86 ##0 , 000 arrested . Government officials and the Buganda kingdom have been at odds for years , sparring over land , sovereignty and political power . U.S. embassy warns Americans in Uganda of potential threat of more violence . Rioting sparked by central government 's travel ban on a tribal king .
NEW : Ugandan president to address parliament Monday on deadly riots . NEW : Death toll from two days of rioting rises to 21 ; 86 ##0 , 000 arrested . U.S. embassy warns Americans in Uganda of potential threat of more violence . Rioting sparked by central government 's travel ban on a tribal king .