Former General Secretary of the main opposition New Patriotic Party (NPP), Kwadwo Owusu Afriyie, also known as Sir John; a communication member of the same party, Mr Hopeson Adorye; and Deputy Coordinator of the National Disaster Management Organisation (NADMO), Mr Joseph Yamin, have topped the list of politicians who used abusive language on radio, the Media Foundation for West Africa has reported in its latest language monitoring report in which seven persons were named as top users of abusive language on the airwaves.