Vigilante can be used as a noun quite easily. "Running around like a vigilante may have legal repercussions." "I'm not a police officer, but I do fight crime so I guess I am a vigilante."
It is called vigilante justice.
A legal eagle
The Regulators
Is called a 'Vigilante'.
Yes they would
The Vigilante was created in 1947.
The duration of The Vigilante is 4.75 hours.
Vigilante Season was created in 2008.
Vigilante Carlstroem was born in 1978.
Did you mean vigilantes? If so, according to Random House, a vigilante is a individual or group attempting to enforce law and punish offenders without legal authority. For example, if I saw you liter and kicked you for littering, then I enacted vigilante justice instead of calling the cops.
An individual who kills bad people is often referred to as a vigilante. They take the law into their own hands to deliver justice, often bypassing the legal system. Their actions can be seen as controversial as they operate outside of the law.