Thousands of protesters overwhelmed Peruvian riot police...forcing them to halt efforts to clear a week-long blockade in a mining region...Residents of Moquegua have seized roads...and cut off access to a mine and smelter belonging to Southern Copper [joint venture Grupo México, Cerro Trading, Freeport-McMoRan], the country's largest copper producer, to demand their province receive a bigger share of taxes paid by the company...[The president] Garcia faces mounting pressure to quickly bring the benefits of an economic boom to the poor...Oscar Gonzalez, Southern Copper's chief executive, said the government should split revenue fairly between the provinces..."If the government doesn't declare a state of emergency, there will be more problems," Gonzalez told Reuters.