BOGOTA Colombian presidential candidate Miguel Uribe has died two months after being shot at a campaign rally, his family said on Aug. 11, as the attack rekindled fears of a return to the nation's violent past. The 39-year-old conservative senator, a grandson of former president Julio Cesar Turbay (1978-1982), was shot in the head and leg on June 7 at a rally in the capital Bogota by a suspected 15-year-old hitman. Despite signs of progress in recent weeks, his doctors on Aug. 9 announced he