Writing for City Journal, political scientist Daniel DiSalvo cites an amazingly depressing statistic while reviewing the work of urbanist Edward Banfield, James Q. Wilson's mentor.
A huge number of blacks are incarcerated; almost a third of young black non-college men are currently serving time. (emphasis added)
I'd have believed "have served time" but "currently" is another thing altogether. On the other hand, there is this.
While many blacks continue to struggle in urban labor markets, the progress made since the time Banfield wrote is striking. The U.S. currently has the largest number of middle-class blacks in the world.
DiSalvo doesn’t cite sources for the above two claims, but if true, both are eye-openers.