Police riot try to hold of protesters during a strike in Tacna, 615 miles (990 kilometers) southeast of Lima, Peru Tuesday, June 18, 2002. Peru's government on Sunday declared Arequipa and the surrounding region in a 30-day state of emergency, after protests over the sale of two state-owned companies turned violent.(AP Photo/Dante Piaggo-EL COMERCIO)

Demonstrators protest against President Alejandro Toledo as police watch them at Plaza de Armas in Arequipa, 465 miles (750 kilometers) southeast of Lima, Peru, Wednesday, June 19, 2002. President Alejandro Toledo canceled a trip to the United States and Nicaragua as protests spread to six cities in southern Peru over the sale of two state-owned electricity companies.(AP Photo/Silvia Izquierdo)

Demonstrators protest as police try to block them at the Plaza de Armas in Arequipa, Wednesday, June 19, 2002. (AP Photo/Silvia Izquierdo)

Residents protests against the privatization of two power generating firms in Arequipa, June 19, 2002. The government sent 1,700 police and soldiers in to secure the "white city," which is under a state of emergency and an overnight curfew after clashes that killed one man and injured 122. REUTERS/Mariana Bazo