Near the end of Alice Goffman’s acclaimed 2014 book, On the Run: Fugitive Life in an American City, she interviews George Taylor, father of Linda, who is one of the central characters, and grandfather of Linda’s three sons, whose lives dominate the narrative. (George and Linda, like most of the names in the book, are pseudonyms.) Taylor’s parents had been Georgia sharecroppers, and like so many African-Americans of their generation, they had headed north in search of a better life. They settled in Philadelphia when George was 5.