Kenyan policemen clash with youths after a protest against the killing of an Islamic cleric in the coastal Port town of Mombasa October 4, 2013. Young Muslims set fire to a church, burned tyres and clashed with police in Kenya's main port city of Mombasa on Friday, after the killing of Sheikh Ibrahim Omar his followers blamed on security forces. Sheikh Omar's death ignited religious tensions in the commercial and tourism hub in east Africa's largest economy, two weeks after Islamist militants killed at least 67 people in a raid on Nairobi's Westgate shopping mall. REUTERS/Joseph Okanga (KENYA - Tags: CIVIL UNREST CRIME LAW RELIGION)