Illinois law pertaining to the publishing of arrest photos on social media, effective January, 2019:
(5 ILCS 140/2.15) Sec. 2.15. Arrest reports and criminal history records.
(e) Notwithstanding the requirements of subsection (a), a law enforcement agency may not publish booking photographs, commonly known as "mugshots", on its social media website in connection with civil offenses, petty offenses, business offenses, Class C misdemeanors, and Class B misdemeanors unless the booking photograph is posted to social media to assist in the search for a missing person or to assist in the search for a fugitive, person of interest, or individual wanted in relation to a crime other than a petty offense, business offense, Class C misdemeanor, or Class B misdemeanor. (Source: P.A. 99-298, eff. 8-6-15; 100-927, eff. 1-1-19.)