720 ILCS 5/2-3.5

"Community policing volunteer" means a person who is summoned or directed by a peace officer or any person actively participating in a community policing program and who is engaged in lawful conduct intended to assist any unit of government in enforcing any criminal or civil law. For the purpose of this Section, "community policing program" means any plan, system or strategy established by and conducted under the auspices of a law enforcement agency in which citizens participate with and are guided by the law enforcement agency and work with members of that agency to reduce or prevent crime within a defined geographic area.