Earlier quoted context omitted.
I really have no clue. Playing music in public isn't considered copyright violation. Otherwise playing the radio would be unlawful. Edit: Wow, it really is considered unlawful. I reflexively hate the idea that playing a song can be considered violating copyright. Yes, I know there's more to it than just that, but wow.
Wrong. One of the rights in the "copyright bundle" is public performance rights, which are reserved exclusively to the copyright holder and their licensees: https://en.wikipedia.org/wiki/Performing_rights Generally speaking, "public performance" means outside a small social group consisting of friends and/or family.
Someone working on the job, like a taxi, driving a truck, or even in the office, listening to music is not going to be in violation - unless the music were played as part of entertainment for customers/patrons.
The cop will unlikely be found to be in violation.
The person filming in uploading, that production would probably be in violation under the 'Transmission Clause'.