"Course or pattern of criminal activity" also means one or more acts of
criminal defacement of property under Section 21‑1.3 of the Criminal Code of
1961, if the defacement includes a sign or other symbol intended to identify
"Designee of State's Attorney" or "designee" means any attorney for
a public authority who has received written permission from the State's
Attorney to file or join in a civil action authorized by this Act.
"Public authority" means any unit of local government or school
district created or established under the Constitution or laws of this State.
"State's Attorney" means the State's Attorney of any county where an
offense constituting a part of a course or pattern of gang‑related criminal
activity has occurred or has been committed.
"Streetgang" or "gang" or "organized gang" or "criminal street gang"
means any combination, confederation,
alliance, network, conspiracy, understanding, or other similar conjoining,
in law or in fact, of 3 or more persons with an established hierarchy that, through its
or through the agency of any member engages in a course or pattern of criminal
For purposes of this Act, it shall not be necessary to show that a
particular conspiracy, combination, or conjoining of persons possesses,
acknowledges, or is known by any common name, insignia, flag, means of
recognition, secret signal or code, creed, belief, structure, leadership or
command structure, method of operation or criminal enterprise,
concentration or specialty, membership, age, or other qualifications,
initiation rites, geographical or territorial situs or boundary or
location, or other unifying mark, manner, protocol or method of expressing
or indicating membership when the conspiracy's existence, in law or in
fact, can be demonstrated by a preponderance of other competent evidence.
However, any evidence reasonably tending to show or demonstrate, in law or
in fact, the existence of or membership in any conspiracy, confederation,
or other association described herein, or probative of the existence of or
membership in any such association, shall be admissible in any action or
proceeding brought under this Act.
"Streetgang member" or "gang member" means any person who actually
and in fact belongs to a gang, and any person who knowingly acts in the
capacity of an agent for or accessory to, or is legally accountable for, or
voluntarily associates himself with a course or pattern of gang‑related
criminal activity, whether in a preparatory, executory, or cover‑up phase
of any activity, or who knowingly performs, aids, or abets any such activity.
"Streetgang related" or "gang‑related" means any criminal activity,
enterprise, pursuit, or undertaking directed by, ordered by, authorized by,
consented to, agreed to, requested by, acquiesced in, or ratified by any
gang leader, officer, or governing or policy‑making person or authority, or
by any agent, representative, or deputy of any such officer, person, or
(1) with the intent to increase the gang's size,