Political killing

Extrajudicial punishment is punishment for an alleged crime or offense carried out without legal process or supervision from a court or tribunal through a legal proceeding.

Extrajudicial punishment is often a feature of politically repressive regimes, but even self-proclaimed or internationally recognized democracies have been known to use extrajudicial punishment under certain circumstances.

Although the legal use of capital punishment is generally decreasing around the world, individuals or groups deemed threatening—or even simply "undesirable"—to a government may nevertheless be targeted for punishment by a regime or its representatives. Such actions typically happen quickly, with security forces acting on a covert basis, performed in such a way as to avoid a massive public outcry and/or international criticism that would reflect badly on the state. Sometimes, the killers are agents outside the government. Criminal organizations, such as La Cosa Nostra, have reportedly been employed for such a purpose.

Another possibility is for uniformed security forces to punish a victim, but under circumstances that make it appear as self-defense or suicide. The former can be accomplished by planting recently fired weapons near the body, the latter by fabricating evidence suggesting suicide. In such cases, it can be difficult to prove that the perpetrators acted wrongly. Because of the dangers inherent in armed confrontation, even police or soldiers who might strongly prefer to take an enemy alive may still kill to protect themselves or civilians, and potentially cross the line into extrajudicial murder.

A forced disappearance (or enforced disappearance) occurs when a person is secretly abducted or imprisoned by a state or political organization or by a third party with the authorization, support, or acquiescence of a state or political organization, followed by a refusal to acknowledge the person's fate and whereabouts, with the intent of placing the victim outside the protection of the law.

...
Wikipedia