Radical Islam militants leave as police use tear gas during a demonstration in Tunis, Friday, Oct. 14, 2011. Tunisia overthrew its long ruling leader President Zine El Abidine Ben Ali in January after a month-long popular uprising that inspired similar movements across the region. Nine months filled with new demonstrations, unrest and uncertainty have culminated in the beginning of the campaign for elections on Oct. 23.(AP Photo/Hassene Dridi)