 And now, traditionally in Africa, people believe that the elderly should be respected for their age, wisdom and life experience, and cared for by their children, grandchildren and community. But Haki Yitu, a human rights organisation, says at least one elderly person is killed every week in Kilifi County in Kenya after being accused of being a witch. Land rights is a major root cause. It is the subject of the latest film from the BBC's Africa Eye team.