I probably would of gotten myself into some kind of trouble if it were me.Animal Control is who I am furious with, they let that dog into the backyard after instead of capturing it, then sat on his behind while it was killing chickens. Sure the owner was irresponsible and selfish about not fixing the problem the first 5 times. However Animal control where I live is more concerned with adopting out dogs (like they did with these dogs after she surrendered them) than they are about public safety.
I’m afraid my Irish would out in full bloom.
And it’s not a pretty thing.
I would be crushed!
So sorry
Not sure of your location (may want to update your profile) but you need to check with the laws there to find out what your recourse is. Unfortunately (as others have mentioned) most times chickens are considered property and there is no compensation for time & emotional loss. If there's a University in your area that teaches law, perhaps you could find someone there to give you some advice.
Hope you get some resolve but our judicial system is pretty unfair 
We just had a terrible hatch, the mother hen killed 2 chicks that I couldn't get away from her fast enough, I rescued one right as she pecked it out of its shell, one hatched and 3 other eggs had fully-formed chicks inside that never pipped. Maybe they got too warm or too cold. I feel like I did everything wrong! But life is a fragile thing and you're doing your best. Don't beat yourself up over it.