1) A Citizen who attempts to or arrests a cop for breaking the law, without getting killed.
2) A cop who arrests another cop in violation of the unspoken
code called the Thin Blue
Line, which encourages
police to turn a blind eye towards internal police corruption.
3) The best cop.
1) killercop was the
name of an Internet website owned and published in 1997 by Steven Sutcliffe. The
name killercop was coined by Sutcliffe in 1997. killercop.com contained Sutcliffe's story about police corruption and numerous other claims of official corruption, misconduct or otherwise illegal activity. The site became notorious of its citation of an early US Supreme Court
Case, US vs. John Bad Elk, which stated the acceptability of killing an officer during an attempted arrest when the arresting officer had no
legal authority to make the arrest. In conjunction with this legal citation, the website offered a parody reward for individuals who justifiably killed a police officer in the course of an attempted 'illegal' arrest. The site then offered additional legal reference materials to help readers determine what constitutes an 'illegal' arrest.
2) Frank Serpico was a killercop. The New
York City detective who, after turning in a large number of "bad"
cops and later being shot in the face, often went undercover to expose corruption in the city. The scruffy-looking, long-haired officer used unorthodox means to
get results, and reported to Lieutenant
Sullivan.
3) Federal Bureau of Investigation director
Louis Freeh was often referred to as a top cop, or a killercop.