Allow me to take a stab at this.
There is much history like this, this is not the only story of its nature, this is just one of the larger ones.
This type of thing is part of what makes white people and black people look at this country so differetly.
For instance, if I say they criminal justice system in this country is racist, many may shrug it off.
Aside from empirical evidence to prove that black defendants are convicted more often, sentenced to lobger sentences and are given the death penalty more often in cases with similar charges and circumstances, I would also point to a long history of the criminal justice system committing atrocities against black people in this country.
And I dont mean things as far back as 1921 either. In 1988 my friends were locked up for the central park jogger rape case, and I easily could have been among them. Right now there is a case called the Jena 6, which sounds a lot like the case of the scottsboro boys. Google those things and just get a glimpse of what I mean.
So I thik PLayas post isn't quite as helpful as it could be, but I dont think wheres hes coming from is someplace bad. There is a sense of denial in this country about the depth and breadth (or dare I say lenght & girth

) of the atrocities comminted against black people in this country and the sad thing is, for all of the improvements, there are major major things still going horribly wrong in terms of the way the gov't practices institutional racism.
Hillary CLinton recently made the point that if white men were going to prison in the numbers that black and latino men have been (on drug charges) these mandatory minimums would have been done away with a long time ago.
I see that as white supremacy. Not KKK hood wearing White supremacy, but just the basic notion that the lives of non-white people are not as valuable as whites. That is white supremacy, it is the institutional racism that is the most prevelant and most dangerous form of racism in our country. That is the underlying thought behind our criminal justice system, educational system and many other critical institutions. And if folsk dont think it is white supremacy, I'd love to know what they think it is.
There are really two answers to this question:
1. If white people know what it is like to be black or latino in this country, why then do some of these grotesque institutional inequalities continue to exist?
A. Average white Americans dont know.
B. Average white Americans dont care. And not caring could be because they are actively racist or because they have a political perspective which allows them to view issues in a way that denies the role of institutions in what is going on in this country. These peole may not be actively racist, but they are defacto racists, because of the impact that their views and votes have.
So there is a small piece of my understanding of the world, I hope someone found it helpful.