As soon as some rights are violated, you don't have them any more. The language of "granting" could be changed to "respecting" and it would be an improvement indeed. But rights are only natural and inherent to the extent that people are free to exercise them in absence of interference.
They can be obstructed or denied, yes. This does not mean you do not have that right. It means it is being denied you.
That's the nature of rights and it's important to consider rights in this fashion because it shapes our ideas about what is acceptable in terms of obstruction and denial
