David Cole in the New York Review of Books:
With approximately 2.3 million people in prison or jail, the United States incarcerates more people than any other country in the world—by far. Our per capita rate is six times greater than Canada's, eight times greater than France's, and twelve times greater than Japan's. Here, at least, we are an undisputed world leader; we have a 40 percent lead on our closest competitors—Russia and Belarus.
Even so, the imprisoned make up only two thirds of one percent of the nation's general population. And most of those imprisoned are poor and uneducated, disproportionately drawn from the margins of society. For the vast majority of us, in other words, the idea that we might find ourselves in jail or prison is simply not a genuine concern.
For one group in particular, however, these figures have concrete and deep-rooted implications—African-Americans, especially young black men, and especially poor young black men. African-Americans are 13 percent of the general population, but over 50 percent of the prison population. Blacks are incarcerated at a rate eight times higher than that of whites—a disparity that dwarfs other racial disparities. (Black–white disparities in unemployment, for example, are 2–1; in nonmarital childbirth, 3–1; in infant mortality, 2–1; and in net worth, 1–5[1]).
In the 1950s, when segregation was still legal, African-Americans comprised 30 percent of the prison population. Sixty years later, African-Americans and Latinos make up 70 percent of the incarcerated population, and that population has skyrocketed. The disparities are greatest where race and class intersect—nearly 60 percent of all young black men born between 1965 and 1969 who dropped out of high school went to prison at least once on a felony conviction before they turned thirty-five. And the incarceration rate for this group—black male high school dropouts—is nearly fifty times the national average.[2]
More here.