If you call a police officer, or anyone else, a vulgar name (but don’t do anything else), are you guilty of disorderly conduct, or, alternatively, disturbing the peace?
This is really not a close call under First Amendment law. Calling a police officer a vulgar name may be impolite and dumb, but is not disorderly conduct, nor is it disturbing the peace. A magistrate in Massachusetts only got it half right, but other authorities prevailed on the half that the magistrate got wrong.
The contents of this blog, this web site, and any writings by me that are linked here, are all my personal commentary. None of it is intended to be legal advice for your situation.