Neruda Poem

It sounds like Neruda is speaking to those who have died and those who came before. From the line "tiller of fields, weaver, reticent shepherd" it sounds like he is talking about everyday workers, not the elite. He is saying show me evidence of your struggle. I think he is acknowledging and honoring those who struggled to make a living. "I come to speak for your dead mouths" meaning he comes to speak for the dead who can not speak. From what I know about Nerda he was a man of the people and probably a socialist. I think he identified with the poor and the working class. "Speak through my speech, and through my blood." He used his poetry to highlight their plight, the poor etc.