Kenneth Okoth worried all through December about the close presidential election in his homeland of Kenya. Things could get tense, the high school history teacher told friends and neighbours. Pray for our country. But the violence that erupted in Kenya after the contested Dec 27 presidential election was worse than Okoth had imagined. The streets teemed with thugs. Members of ethnic groups that had lived together in relative peace for decades turned against one another, looting and burning homes and stores. Then Okoth heard that members of a gang called Mungiki were roving the street