What is a short summary of The Ballad of Rocky Rontal in the collection, The King Is Always Above the People?

In the story, The Ballad of Rocky Rontal, a young man who grows up in socially and economically disadvantaged circumstances spends 32 years in prison for a gang-related murder. After he gets out of prison, Rocky is faced with the choice of whether to avenge the rape and murder of his younger sister. The story ends with him standing on a roof with a rifle, trying to decide whether to shoot the man who perpetrated the crime.