Well, sure, I suppose the word itself could be Latinized into a spiffy scientific word. It mine as well be called "institutional racism" which is generally rather synonymous with it. The term itself came from, like, the sixties, man. Many people did have access to the internet to compare their experiences with ease across many populations across the world. Truth is, people are going to divide on every conceivable bases, and hate each other for all sorts of identifications held.
The cause for the circumstances which allow this racial discrepancy is the war on drugs. We agree the war on drugs is a problem. But the war on drugs is not by itself the cause for the discrepancy in races when it comes to taking the brunt of drug arrests, or harder penalties, or more likely sent to jail. The fact that there is a war on drugs isn't the sole reason of the discrepancy, though obviously, in this particular example, it is a necessary condition for there to be a war on drugs.
So, we all exist under the laws, white or black, in America, and despite whether or not the war on drugs is a good or bad thing, it exists and has existed in America for, what 90+ years now. The privilege being here is that despite the fact the War on Drugs is something we all endure, it's just that white people, and especially white people from middle class and up, and have to endure far less of it, statistically speaking.
There are other examples of racial discrepancy that don't involve the dysfunction war on drugs. It's across the board in crime...
"Male and female white prisoners of all age groups had lower imprisonment rates than male and female black and Hispanic prisoners. Overall, black males were 6 times and Hispanic males 2.5 times more likely to be imprisoned than white males in 2012. Hispanic males ages 18 to 19 were more than 3 times as likely as white males of the same age to be imprisoned, while all other age groups were at least twice as likely as white males to be serving a prison sentence. Black males had imprisonment rates at least 4 times those of white males in all age groups. The rates for black males age 39 or younger were more than 6 times greater than white males of the same age. Male inmates ages 18 to 19 had the largest imprisonment rate disparity between whites and blacks. Black males in this age group were almost 9.5 times more likely than white males to be in prison.
"Almost 1% of all male residents in the United States were imprisoned at year end 2012. A total of 2.8% of black, 0.5% of white, and 1.2% of Hispanic males were in state or federal prison on December 31, 2012. Among black males, this represents a decline from the rate in 2011 (3%). Between 4% and 7% of black males ages 20 to 49 were prison inmates. Black males ages 30 to 34 had the highest incarceration rate (6,932 prisoners per 100,000 black male U.S. residents ages 30 to 34). This age group also had the highest imprisonment rates among white and Hispanic males in 2012.
"Among female prisoners in 2012, black females ages 18 to 19 were 3 times more likely to be imprisoned than white females. Hispanic females in this age group had imprisonment rates nearly twice those of white females. White and Hispanic females approached parity imprisonment rates among prisoners ages 35 to 44. Hispanic females age 65 or older were more than twice as likely as white females of this age to be serving time in prison, the age group of greatest disparity. Black and white female imprisonment rates were closest among prisoners ages 25 to 39, when black females were less than twice as likely as white females to be imprisoned."
http://www.bjs.gov/content/pub/pdf/p12tar9112.pdf (sorry for clumsy pdf).
I'm not sure how one prioritizes injustices. Ideally, it would be obvious to eliminate all injustice. I'm assuming that most people are most sensitive to the injustices they themselves are most familiar with.
No want likes to be misrepresented, sure. "White privilege" is not really meant to a prerogative term against white people. It's a descriptive for privilege granted for white skin, a privilege being something others aren't granted.
That being said, I don't think these notions discount the fact that rural white people (and almost all rural people throughout societies) are also discriminated against unfairly in various ways. And rural people can be very discriminating in ways as well.
Oh what a complicated world.