Decades later, it's hard to grasp what the federal government did to hundreds of black men in rural Alabama. For 40 years starting in 1932, medical workers in the segregated South withheld treatment for unsuspecting men infected with a sexually transmitted disease simply so doctors could track the ravages of the horrid illness and dissect their bodies afterward. Finally exposed in 1972, the study ended and the men sued, resulting in a $9 million settlement. Twenty years ago this May, then President Bill Clinton apologized for the U.S. government. But it did not mark the end of the study's ugly legacy. Relatives of the men still struggle with the stigma of being linked to the experiment, what's commonly known as the "Tuskegee Syphilis Study." In 1929, government doctors ... recruited 600 black men into a health program with the promise of free medical checks, free food, free transportation and burial insurance. Health workers told syphilitic fathers, grandfathers, sons, brothers and uncles only that they had "bad blood." None of the men was asked to consent to take part in a medical study, [or] told that "bad blood" actually was a euphemism for syphilis. Instead, doctors purposely hid the study's purpose from the men, subjecting them ... to painful spinal taps and blood tests. Medical workers periodically provided men with pills and tonic that made them believe they were being treated, but they weren't. And doctors never provided them with penicillin after it became the standard treatment for syphilis in the mid-1940s.