V5. In the past decade a media revolution in Africa has changed the way Africans view the world, their thinking and their expectations. Journalist Adam Lusekelo meets the continent's key communication figures. Today it's the turn of Reginald Mengi , a businessman who privately owns or controls almost 70 per cent of Tanzania's media, Previously in government hands. What are the implications of this dramatic shift in media control and is this healthy for the country's emerging democracy? producer Ruth Evans