US Secretary of State John Kerry was in Cairo on Saturday to push for a way out of Egypt's violence-wracked political impasse, underlining the need for a consensus to overcome a crippling economic crisis. As Kerry arrived from Turkey, protesters torched a police station in the canal city of Port Said which is entering its third week of civil disobedience, reflecting the size of the task facing the secretary of state in Egypt, which has been rocked by months of unrest, AFP reported. Kerry is due to hold talks with Islamist President Mohamed Morsi during the visit.