Peruvian police stand guard along a street near Congress as wildcat miners march in downtown Lima during a national protest April 5, 2010. Six people died in Peru when police tried to clear a roadblock set by wildcat miners protesting a government measure to impose environmental controls on them, police said on Monday in the latest round of conflict over natural resources. The violence broke out on Sunday in the southern province of Arequipa, and hundreds of protesters were still blocking a piece of the country's main highway to Chile, police said. REUTERS/Mariana Bazo (PERU - Tags: CIVIL UNREST POLITICS)