I agree that wage disparity in the US is a problem, but the reason you gave for it was false.
Specifically, you said that the reason that wage disparity is a problem is that it is impossible for a family to "live on" the incomes from a Wal-Mart job, and therefore the government is required to subsidize them.
You made an argument that was trivial for Chris Stucchio to dismiss: for every Wal-Mart employee making $14,000/yr, 6-8 Indian people are living with far less (PPP adjusted!), and raising families while doing it. Now you're stuck; you either have to come up with an argument that Indian people are different from Americans, or that Indian people are "not really living". Neither argument is fun to defend, as you've made very apparent.
My suggestion is, make better arguments, or at least, don't complain so loudly when your bad arguments are routed by facts.
Look: neither of us are going to solve income inequality by talking about it on HN. As you can see by the pale cast your comments seem to be taking on almost as soon as you write them, it's unlikely you're going to do much of anything to move the world forward by advocating for this issue today.
But one thing we can do to make the world better is to get better at having discussions with people that disagree with us. Maybe start with that here on HN.
I find 'yummyfajitas arguments painful to read. Most of the time, they create an annoying feeling of knowing he must be wrong, via a sort of deontological spidey-sense, but not knowing exactly how to rebut him. But that's a good thing, not a bad one: it means that to argue with him, you need to do better than playing to a crowd of people who already agree with you. And after all, what would be the point of doing that?