The Constitution and Statutes
The federal government and many states have laws forbidding non-consensual recording of confidential communications. However, such statutes do not apply to your performance of official duties in public because your exchanges with suspects, victims, and witnesses are not "confidential." Your actions and communications are generally in public view—or at least within sight and hearing of the person doing the recording. Also, you may be making your own recording, and everything that's said and done will likely be described in an official crime or arrest report to be read by supervisors, attorneys, judges, and others.
And even if your statutes are written in such a way as to prohibit
citizens recording
what you do and say in public, statutes cannot reduce the constitutional protections people enjoy under the First and Fourth Amendments. The Constitution is the supreme law of the land. The act of recording matters of public interest is shielded by the right of free speech. Any arrest made in retaliation for a person's exercise of constitutional rights is an unreasonable arrest. Therefore, arresting someone for taping you in the performance of official duty, or seizing someone's recording device, could violate the First and Fourth Amendments, creating potential civil liability.
Federal Case Law
Although the
U.S. Supreme Court
has not issued a ruling in any case that presented these issues, numerous lower courts have confronted them in federal civil rights lawsuits. The consistent rulings in these cases is that officers may not intimidate citizens into surrendering their
First Amendment
rights, may not lawfully seize a person's cameras or tapes at will, and may not lawfully arrest a person for exercising his or her constitutional rights. Examples include the following cases.