So rights only exist due to government edict?

That is something that (probably) belongs to you, but I don't think it can be classed as true property. Or a product of one's labor. I mean you didn't put any labor into producing it. Your own milk is no more a "product of labor" than a pile of your poo is.

I never mentioned rights. I was only telling you what will most likely happen in a communist regime.

So if it's not property then someone can come take it without recourse or complaint?

And if the hypothetical communist government says that I can't take it, what would be the hypothetical justification as to why I can't?

I guess so. I mean if someone wants my poo so badly they can take it lol.

Dunno. They have might, so they can do what they want. They dont need any justification for anything they do. They just point a gun at you.

And if you've got a baby, people can similarly come take your breastmilk you've collected without recourse or complaint?

Of course they can't, but I doubt I would have recourse in a communist country.

And why can't they?