Free The Slaves: Memo to a Dead President: Slavery Still Exists
Liz Bugarin stashed this in -isms
"As a hidden crime invisible to most statisticians, estimates of current U.S. slavery are imprecise. Conservative estimation suggests 40,000 to 100,000 slaves in the U.S. today (.00033 of population)."
Any number that's not 0 is not a good number :-/