The dogs are in their yard, right?
If so why are you upset? I understand the danger to your chickens I just don't understand your anger. It really is on you to keep your chckens on your property. Now if the dogs were coming onto your property that would be a whole different scene.
One hates to see dogs left out in the yard with no attention or training. Some people seem to see dogs as a yard accessory, like a barbecue.