Clashes overshadow start of Milan Expo

By Sara Rossi MILAN (Reuters) - Police fired tear gas at demonstrators on Friday as protests overshadowed the start of the Milan Expo, a global fair the government had been hoped would help to put a new face on Italy after years of economic decline. Thick clouds of smoke from burning cars filled parts of central Milan, where groups of protesters, their faces masked against the fumes, threw stones and faced off against lines of police in riot gear. The confrontation came hours after a glitzy open