I'd say a right is anythjng that is not a wrong.
I realise now we're having two different conversations lol. Obviously that is one definition of right, but in my post I refer to human rights. So a right means something that you are allowed to do in this context.
My argument is that no one should need someone else to tell them what they are allowed to do. No, it isn't right for someone to go and murder someone else. But, it's also not right to tell someone that they cannot go and murder someone else, because just as you said;
All rights come down to property rights. I own my self, the product of that which I produce, and the moral agency of my actions.
No one should be able to impose rules on another against their will. Yes, I agree we should try our best not to harm any others with our actions, but we should do it because it is right to do so, not become some one tells us it is.