Cop Killer

Cop Killer may refer to:
 * A cop killer is a term that is used to refer to a person who commits the act of murder against a police officer. Sometimes, a person who causes said acts against those in law enforcement may fall under the term as well.
 * A "cop killer" bullet is term, born of 1980s media hype, describing Teflon-coated bullets supposedly capable of penetrating police body armor. see also armor piercing.