I'm not sure this is accurate. Throughout history people have only had those "rights" which the ruling classes allowed, and they could be taken away at the whim of any member of that ruling class. It's only in modern times that we've begun thinking in terms of "human rights", thanks in large part to the advances of more democratic governments. I think that, ultimately, we can only have those rights which the most powerful people are willing to allow us to have. They have the power to rescind them by simply sending in the military/police forces. Once bullets and bombs start flying, the only right you have is the right to duck!