...And further, the nature of what would be agreed as a right would change depending upon the specific characteristics of the social group that is making the social contract...
Then there can be no question that the modification of the social contract would not prohibit the (re)introduction of slavery or the arbitrary defenestration of homosexuals, is there?
And finally, such rights cannot be considered "inalienable" since there are always situations where a society considers an individual has lost his rights (IE a criminal). And if rights can be removed in some circumstances, they are not inalienable.
I suggest that those incarcerated have not lost a right but merely the ability to exercise it.
