Illinois law on this is unique. In Illinois, it is legal to film/ video the police performing their duties in a public place. However, Illinois has an unusual law still on the books, although the law has been ruled unconstitutional by one Judge and that ruling may be followed by other judges. This is the Illinois Eavesdropping law, that makes it illegal to record AUDIO of a police officer performing duties without getting his or her permission. So, it is always legal to record the VIDEO portion, but it is questionable whether it is legal to record the AUDIO portion. This law states:
"720 ILCS5/14-4 (b) The eavesdropping of an oral conversation or an electronic communication between any law enforcement officer, State's Attorney, Assistant State's Attorney, the Attorney General, Assistant Attorney General, or a judge, while in the performance of his or her official duties, if not authorized by this Article or proper court order, is a Class 1 felony."
The law has been deemed unconstitutional by at least one judge , but is still on the law books. Therefore, you might be arrested, especially outside of Chicago or in downstate Illinois. If this happens, you should get a Free Speech legal group to assist you.
Answer Applies to: Illinois