I've also said that I personally would recommend a dash cam which records the last 5 min and no audio, this should be enough as a deterrent and will allow you to provide any evidence if required while not keeping anything on the record that could damage you.
And please do not compare dashcams to bodycams, because ?I'm pretty sure you would not want to live in a world where everyone is wearing a bodycam that is recording 24/7, or even suggest people to walk on the street while recording everything with their phones.
When you make a record of anything you should be aware that what ever you document can be used against you, or against another party at any time and that your agency to maintain the privacy of that record is limited both from a legal and practical point of view.