Here's an excellent story by Bill Moyers about the Tulia, Texas travesty from the August 22, 2003 NOW With Bill Moyers program. He interviews NY Times columnist Bob Herbert about how he came across the case and eventually helped prove the innocence of over 35 people that had been framed by undercover cop Tom Coleman.

Bill Moyers NOW On The Tulia, Texas Travesty - Complete (Small - 29 MB)
Bill Moyers NOW On The Tulia, Texas Travesty - Part 1 of 2 (Small - 14 MB)
Bill Moyers NOW On The Tulia, Texas Travesty - Part 2 of 2 (Small - 16 MB)