(From The Washington Post)
It's true. There are some, as Politifact has written, 1.7 million black men under some form of correctional control, including probation and parole, excluding those held in local jails on any given day. That is about twice the 870,000 or so black men at least 15 years old who were enslaved in 1850, according to the Census (warning: big file).
In some ways, of course, the comparison is misleading. Although there are more blacks under correctional control now than there were slaves before the Civil War, the population has a whole has grown tremendously in that time. The Census that year found that roughly nine in 10 of the nation's 3.6 million blacks were enslaved. By contrast, one in 11 blacks is under correctional supervision today, according to The Pew Charitable Trusts.