In this task, you are given product reviews about dvds. The goal is to classify the review as "POS" if the overall sentiment of the review is positive(the reviewer is satisfied) or as "NEG" if the overall sentiment of the review is negative(the reviewer is not satisfied).

A Champion of Justice and Integrity . Al Pacino had appeared in "The Godfather", but was not yet the film icon that he started to become, in part, because of "Serpico". Francisco Serpico was an honest Italian cop - courageously honest. When he saw widespread corruption among New York Cops everywhere he was offered the opportunity to participate in the payoffs that the police were receiving left and right. Initially, Serpico simply abstained. The corrupt cops became of suspicious of Serpico - at one point in the film he is told "who can trust a cop who won't take a payoff?" Because of his dedication to honest police work and a burning desire to "do the right thing" Serpico goes from a non-participant in the graft to actively fighting it. He is understandably frustrated over and over when his reports to the police authorities are met with not much more than "you're doing a good job, Frank, keep up the good work and we'll reach out for you when the time is right". The right time never arrives and Serpico, prodded by his friend Bob Blair (played by Tony Roberts), brings his complaints outside of the department - first to the Mayor's office, then finally to the New York Times. Serpico is treated by his fellow police officers initially as an eccentric goody-goody, then later subjected to death threats. The film is bookended by a sequence in Serpico's life when he is transferred to a narcotics division then probably set-up for assassination. The point-blank bullet that Serpico's partners lead him into doesn't kill him and Frank is alive today, lecturing at police academies and for organizations interested in having a "lamp lighter" - giving support to those who have the inclination, but perhaps not the courage, to speak up about things that are plain wrong. Now, thinking about the film later, I wonder what was going on in the minds of the other policemen. Presumably, many of them didn't WANT to be crooked cops. Certainly the "extra" money that they received was tempting - perhaps they looked at those extra dollars as compensation for what was not a lot of pay in a dangerous profession. Serpico is one of the most visible examples of someone "doing the right thing" against incredible odds, even as his life was threatened. This is a good story that needs to be told and Sidney Lumet and Al Pacino tell it well
POS