Professor Michelle Alexander in the New York Times:
Exposing police lying is difficult largely because it is rare for the police to admit their own lies or to acknowledge the lies of other officers. This reluctance derives partly from the code of silence that governs police practice and from the ways in which the system of mass incarceration is structured to reward dishonesty. But it’s also because police officers are human.
Research shows that ordinary human beings lie a lot — multiple times a day — even when there’s no clear benefit to lying. Generally, humans lie about relatively minor things like “I lost your phone number; that’s why I didn’t call” or “No, really, you don’t look fat.” But humans can also be persuaded to lie about far more important matters, especially if the lie will enhance or protect their reputation or standing in a group.
The natural tendency to lie makes quota systems and financial incentives that reward the police for the sheer numbers of people stopped, frisked or arrested especially dangerous. One lie can destroy a life, resulting in the loss of employment, a prison term and relegation to permanent second-class status. The fact that our legal system has become so tolerant of police lying indicates how corrupted our criminal justice system has become by declarations of war, “get tough” mantras, and a seemingly insatiable appetite for locking up and locking out the poorest and darkest among us.