|Alex, I think that rights are metaphysically given, not declared by you, me, or the government. We can try to determine whether or not someone has rights, but we can not declare whether or not someone has rights. That's what Jefferson means, I think, when he says that rights are unalienable. So you can go right ahead and declare me an irrational being, but it doesn't make me an irrational being. Only my use or evasion of reason makes me an irrational being.|
You say that all humans have absolute rights, but I absolutely 100% do not think rights have anything to do with Homo sapiens DNA. That would be totally arbitrary. Rights must be based upon a person's (or alien's or genetically modified chimp's) ability to reason and live in a harmony of interests with others.
As I said, I think that different people have different rights based upon their capacity and behavior. Children are no exception. Yes, there is freedom of speech, which is the recognition that merely saying most things is not an initiation of force. But that doesn't give some idiot the right to yell "Fire" in a crowded movie theater, because so doing IS an initiation of force.
(As a caveat, I don't think Rand explicitly says what I'm saying here, but I think that some things that she writes on rights are vague and contradictory, and my above conclusions are clarifications and choosing the correct stance out of contradictory stances.)