Six people died in clashes between police and southern separatists in the port city of Aden in southern Yemen.<br/> The clashes erupted when crowds gathered, calling for the secession of the south.<br/> Police used tear gas and live rounds, and witnesses said gunmen among the protesters returned fire.<br/> Ten others were wounded, including two policemen.<br/> The rally took place during a festival marking the 25th anniversary of the south's struggle for independence.<br/> The protesters were also rejecting a bill that would grant immunity for President Ali Abdullah Saleh when he steps down.<br/> The successor to Saleh will face many challenges in the impoverished country -- the separatist movement in the south, a rebellion in the north and a terror threat from al-Qaeda's most active wing, based in Yemen.<br/> Michaela Cabrera, Reuters.
