Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Dunbar-Ortiz has produced an American classic in biography.

With the publication of Red Dirt Dunbar-Ortiz has made a major contribution to American biography. She has managed to write a Steinbeckian account of her childhood and youth in Oklahoma in the 1950s. The humanity and oppression of poor white people is writ large here. Red Dirt is informed by a feminist and class analysis but with great grace and touching honesty. like Meridel LeSueur's novels of 60 years ago, Dunbar-Ortiz shows the quotidian lives of working people who are ignored or riduculed by the outside world. The book is clear eyed and rich in detail. I used the book as a required text in a Sex and Gender course and it was a great hit among my students.