THE streets of Santiago turned into a sea of humans on Friday last week. On that day, which the Chilean government declared a holiday, about 15,000 people took to the streets in the Huechuraba district yelling slogans and carrying banners protesting the presence of US President George Bush in the city. Bush was in Santiago to join leaders from 20 member nations of the Asia-Pacific Cooperation Forum (APEC) in a summit which lasted through the