sentences:  Runners surrounded by rows of security carried the Olympic flame past thousands of jubilant Argentines in the most trouble-free torch relay in nearly a week.People showered the parade route with confetti as banks, government offices and businesses took an impromptu half-day holiday for the only Latin American stop on the flame's five-continent journey.Argentine activists told a news conference that they would not try to snuff out the torch's flame as demonstrators had in Paris and London.