So, in your opinion, rights are merely abstract concepts? I am curious as to how that does not leave rights as merely what society says they are (which, in my opinion, would mean they are privileges and not rights).
Let's put it this way - if you lived alone on a desert island, would the concept of "rights" have any meaning? You may well be free, but your rights to life and property won't protect you from tigers and tsunamis.
"Rights" are a meaningless concept absent agents bound to acknowledge them. In other words, rights are a contract between agents competent to acknowledge them.
The idea that all are equal before the law (as opposed to kings, nobility or clergy having special privileges is not self-ev8ident, either, but it is a good start for a fair society.
I'm not entirely sure I buy the idea that an assumption of equality is necessarily fair, nor that it's a prerequisite for a successful society. It's simply one of our axiomatic assumptions that generally goes unchallenged. For example, take the situation most of us spend the majority of our lives in: work. I'm certainly not the equal to the management or the CEO in terms of privilege or compensation, or the discretion to make decisions. My status is more easily measured from the bottom of the organization than the top. There are rules I have to follow that managers and executives are exempt from. Do I resent that? Of course not. Somebody has to be the sysadmin. I'm good at it and I enjoy it, and while I'm not getting rich, compared to most of my fellow citizens I'm making a very good living. In other words, my contentment with my situation is not contingent on being considered an equal.
And we already do have different laws for different classes of citizens. Take affirmative action. It's basically a tacit acknowledgment to minorities that while society won't treat them equally, it will give them compensation. Apparently, they consider that arrangement acceptable, because no politician dares to challenge it.
Also, you'll live under different laws depending on the jurisdiction you live in. In Illinois, possessing fireworks is illegal. 5 miles down the road in Indiana, they're legal.
Equality before the law is a nice fairy-tale, but who could point to a society where it has ever actually been the case? Seems to me the obsession with "equality" has caused more troubles than it's solved.