Whether or not a particular crime is one that the investigator is allowed to commit in the course of an investigation is extremely fact dependent, so the fact that you haven't included any is a little suspicious.
"(d) This Section does not prevent any lawfully authorized investigative, law enforcement, protective, or intelligence gathering employee or agent of the State or federal government from operating any audiovisual recording device in any facility where a motion picture is being exhibited as part of lawfully authorized investigative, protective, law enforcement, or intelligence gathering activities."
Many statutes include exemptions for law enforcement. If there is no exemption, then it is a crime for the cops, the same as the public.
e.g. https://www.ilga.gov/legislation/ilcs/documents/072000050K21...
"(d) This Section does not prevent any lawfully authorized investigative, law enforcement, protective, or intelligence gathering employee or agent of the State or federal government from operating any audiovisual recording device in any facility where a motion picture is being exhibited as part of lawfully authorized investigative, protective, law enforcement, or intelligence gathering activities."