My next book could be...

...The New Jim Crow, by Michelle Alexander. From Charles Blow's column in the Times today (my emphasis):

As the best-selling author Michelle Alexander pointed out in her sensational 2010 book “The New Jim Crow,” various factors, including the methodical mass incarceration of black men, has led to the disintegration of the black family, the disenfranchisement of millions of people, and a new and very real era of American oppression.

As Alexander confirmed to me Friday: “Today there are more African-American adults under correctional control — in prison or jail, on probation or parole — than were enslaved in 1850, a decade before the Civil War began.”