Police officer perjury in court to justify illegal dope searches is commonplace. One of the dirty little not-so-secret secrets of the criminal justice system is undercover narcotics officers intentionally lying under oath. It is a perversion of the American justice system that strikes directly at the rule of law. Yet it is the routine way of doing business in courtrooms everywhere in America. Why do police ... show contempt for the law by systematically perjuring themselves? The first reason is because they get away with it. They know that in a swearing match between a drug defendant and a police officer, the judge always rules in favor of the officer. Another reason is the nature of most drug cases and the likely type of person involved. The defendant is poor, uneducated, frequently a minority, with a criminal record, and he does have drugs. But the main reason is that the job of these cops is chasing drugs. Their professional advancement depends on nabbing dopers. It's reinforced by San Francisco's own sorry history of infamous undercover narcotics officers promoted to top levels in the department despite contempt for the law shown by bullying, brutality and perjury in carrying out illegal searches and arrests. So the modern narcotics officer is just following a well-worn path.