Instruct: Classify a review as either positive or negative.
Query: A Cautionary tale of vigilantism

I read The Ox-Bow Incident in my ninth-grade English class. It's a cautionary tale of vigilantism. Set in 1885, it's about the citizens of a town in Montana, many of them ranchers, who form a posse on their own, to go after cattle rustlers. Two innocent men are caught by the mob who then invite them to a necktie party, (a hanging), and one of the people in the mob tries to stop it realizing their mistake. He's shouted down and the hanging goes ahead in a pass known as the Ox-Bow. By the time it's over, the rest of the mob realizes too late that they've made a terrible mistake.