Police have tremendous power in society that can enable corruption if abused. While most officers act ethically, a small minority engage in misconduct like accepting bribes, using excessive force, or dealing drugs. Notable cases of police corruption include Frank Serpico exposing widespread corruption in the NYPD in the 1970s and over 100 officers in Puerto Rico being arrested for drug trafficking in 2010. Reducing corruption requires reforms like improving training, oversight, and establishing civilian review boards.