* Santiago's Plaza Italia has been used for three weeks as the main gathering site for the mass demonstrations* But yesterday the protest escalated as a hooded group began to loot the La Asuncion church in the area* Church pews, pianos, religious paintings and iconography were all carried out of the door and set alight * Nationwide protests, which have a range of demands, have so far left 20 dead and a further 2,500 injured Demonstrators have started looting churches in Chile as the long-running protests continue. Thousands of people had gathered near the site in Santiago's Plaza Italia that...