Instruct: Classify Amazon reviews into positive or negative sentiment
Query: From Heinlein's crypto-fascist story

Even as a kid, reading this story gave me some reservations about a future earth where the only path to full citizenship (i.e. the right to vote) was restricted to those who performed a service to the State. In this case, military service against totally unsympathetic alien bugs. The film is loyal to the book, which does not recommend it, Add to that some godawful acting from clueless unknowns and you have a special effects disaster of a film. No wonder it took fifty years to make a movie of Heinlein's "classic".