roody lafont is one of them. >> narrator: the police say roody is a violent gangster who has returnedto his old ways. >> narrator: even before the earthquake, police had few of the photographic and fingerprint records that forces in other countries rely on. >> narrator: an escaped gangster is willing to lead the police to a gang hideout if his sentence is reduced. >> narrator: at the heart of almost every police operation is an informer whose motives are often suspect. from inside the vehicle, the informer begins pointing out people to arrest. the main target, an escaped prisoner named alfred, has vanished. his sister is taken for questioning. >> narrator: when an informer can't be found, the police seal off entire neighborhoods and arrest anyone who appears suspicious. >> narrator: the men arrested in the sweep were taken to a police station for screening. >> narrator: watching from the chief's office are three men from the neighborhood. they've been told to look for unfamiliar faces. >> the pointing out of a individual by a community does not mean that then the individual community