For decades, the Mexican-born journalist Alma Guillermoprieto has been respected, if not revered, as the preeminent English-language chronicler of the trials and triumphs of contemporary life in Latin America. When she speaks, people in the know tend to listen. The Years of Blood: Stories from a Reporting Life in Latin America, published last year, is Guillermoprieto’s latest and final collection of reportage from the region. There is plenty of bloodshed in the 21 compiled stories — and while there is plenty of life too, these are largely not the kinds of tales she originally set out to record.