In previous (though admittedly less threatening) situations I have stood my ground, but this was too close to home, where I have a new baby, there was no one else around, and the angry gentleman was not in control of himself.
Except in reality police would probably do nothing much about it. And then as the op said he may be dealing with a lot more threatening behaviour.
Having been in similar situations on numerous occasions I have never felt the need to report it. I do think if you stand your ground it usually won't get that far. If these luddite bully cunts smell fear they will lose the small shred of humanity they once possessed and actively try squish you in their 4x4. In summary, I have found, if you run, they chase..
In previous (though admittedly less threatening) situations I have stood my ground, but this was too close to home, where I have a new baby, there was no one else around, and the angry gentleman was not in control of himself.