This article is laughably misleading. There is no social mobility, and barring the weak caveats in the article, it actually makes this point clear by failing to rebut what it posits.
But this whole matter of race is kind of stupid anyway. The forces keeping people down today are not racist as much as classist. The corporations do the same things (driving down prices and then choking supply to make cash) everywhere in the world, to pretty much all races. They just want to make sure that we are poor, dependent, and willing to follow their directions in exchange for some $ to put toward our next month of survival. They want your survival to depend directly on their decisions, not yours. They have had great success selling us into this position and in every sense, we love everything about the bread and circus. Its entirely un-PC to just execute people, but it's the way of this age to render societies dependent so that they are just as expendable and exploitable living in their own towns as they would be in a concentration camp with direct control. Just look at LA, who decides whether they get the torrent of water that keeps them alive on a given day? It would be easier to crash the currency and render the water supply unaffordable from the top reaches of power than it would be to hire an army to gas every house. The corporate empires we live under today are the new, more efficient fascism, and we have no other reason than blind faith to uniquely trust them with the future of our culture.
It was never possible in history to render people as dependent on trade structures as now, because of innovations in transportation and communication. The powerful world leaders even trashed Europe 70-90 years ago to generate the need for their modern super-states and to create a void for the new empire, the multinational corporations, to fill. The same powerful white governments that appear to oppress specific races in the US will dump cash on black dictators willing to wave the "capitalist" flag. They don't care about keeping one race down, they just care about solidifying the age-old world order of kings and queens ruling masses. They don't mind propping up dictators, and they do everything they can to let the corporations invade the markets of any country. They are happy to see a dictator impose a low standard of living on his people as long as the dictator will cooperate with the Western gov'ts and corporations. Their rule used to be by "divine right," but as we all are selectively taught environmentalism, globalism and the massive fallacy of "free-market capitalism" which is really just "communism", we will soon accept this kind of centralized rule as a form of "scientific," rather than "divine, right."
Anyway, the average black folks and white folks realize none of this, and frankly a lot of white folks probably secretly or overtly accept the overall structures of power because they assume that if there is some underlying racism, it will protect them. If I was black, I sure as hell wouldn't want to participate in our culture, and if I was trying to live in a poor urban area, I doubt I would really have the opportunity. You can't take that away from them, we live in a world with little social mobility, and in our country, minorities like blacks and mexicans are at the bottom, it's in part due to age old institutional racism, but racism is a low priority amongst the power brokers that write our laws and give us our mass produced cheap products. The people's decisions aren't going to get them out of poverty in a statistically appreciable rate any faster than a white resident of Hooverville, USA circa the depression. The people in power (mostly world bankers), don't care what color you are, they just want to be sure that nothing you do is going to seriously threaten any of their "capitalist" empires. They didn't build any of it with their own hands, they simply took most of it at gun point, in exchange for fragile currency, or under the siege of starvation in fledgling import cultures (so called "developing" countries). And even today the great corporations and banks which hold the largest fortunes, award a fractional splinter of their wealth to the masses of people that actually comprise the physical corporation. It is just a system of organization that serves to award ownership of a large enterprise to the small group of people at the pyramidal top of the corporate hierarchy.
As long as you have an economic system with such a low level of legitimacy, you can never expect the lower classes to rise from poverty, whether they are black, white, mexican or whatever, anybody that does is just the lucky minority. Thats why our borders are wide open. We are ruled by so few today that they can set up their towers of wealth anywhere and let the rest of the world slowly reach an equilibrium of perpetual poverty. You'll see a lot of drivel in that piece you posted arguing that blacks have it good in comparison to whites. The fact is, the average white person in America owns nothing of value because they've pretty much all sold out on the debt based, import based lifestyle that they watched on TV and in movies. All the banks have to do is put some of their vast stores of dollars on the market, and suddenly we each own roughly the same amount in assets as a Nigerian. As long as we waste our time quibbling about racial issues, we won't even discover our real enemies until it is too late and the middle class finally tips into extinction.