DMT: Rights are just commonly held opinions.
I am coming at this from an Existentialist angle. I do not believe that "Rights" actually exist beyond concepts and opinion, and I don't see any grounding for them in the physical reality we exist in.
I would like to start off with the common ground that we can all agree on. There is no force of the universe that will enforce your rights. If you are being chased through the woods by a serial killer, your right to life will not cause the universe to save you. Food will not fall from the sky if you are starving, water will not appear when you are dying of thirst. People and animals die in horrible, unfair ways all over the world every single day without fail and reality does not change to conform to their rights. So, I believe that we would all agree that the physical universe does not respect your rights.
A little more controversial is the view of Rights regionally and throughout history. What a person is allowed to do or guaranteed is dependent on who and when they live. Rights have expanded and contracted based off of all kinds of characteristics, financial situations, relations... They are not constant and have changed along with the society and the commonly held opinions of the people who 'grant' them.
I see the turn "human right" said about a lot of things. It is delivered as a fact. But, actually, all rights are just opinions held by a majority (enough to tip the scales of a social interaction). We should not view rights as an immutable fact that exists. It is an opinion, just like "pumpkin spice is the best flavor latte" or "Vegemite is food".
This leads me to the conclusion that 'rights' are exclusively opinions held by other people and the only real strength they have behind them is the strength that other people grant them. If someone decides to dismiss your rights, you don't have them - unless other people who support those rights are allowed to weigh in. It is more of a social balancing act than it is a rule of nature.