OMG!!I would of demanded their addresses from the police officer and gone round and smacked them all upside the head!!
That is awful behaviour and tantamount to assault againest you. BUT if I saw an off lead large dog (esp a breed known to be DA or prey orientated) I would be wary too. Meet and greets would be done with me crouching, hands at the ready, and I wouldnt let mine play/roam with a large dog I didnt know well. But they should of said a polite hello and left you and Hudson alone IMO.

__________________
SUMMER...JUST SAY NO!

I love my furkids.
dogs-Adam, Hannah, Heidi.
cats-Banjo, Bess, Eric, Tootsie, Blossom, Gracie.
Syrian Hamster-Inigo Montoya.
Rats-Ezri, Audrid, Emony.
Corn Snake- Kiora.
Kenyan Sand Boa- Kushti.

RIP- Winter, Autumn, Leela, Spring, Gandalf, Summer,Jet, Pip, Moo, Lilac, Wild Thing, Patrick, Frisbee, Echo.