Tulia, Texas - Preview from California Newsreel

From the website:

Tulia, Texas is the story of a small town's search for justice and the price Americans pay for the war on drugs. In 1999, a drug sting operation in the small town of Tulia resulted in the arrest of 46 people, 40 of who were black, almost 15% of the black population. Local attorneys denounced the sentences as a form of "racial profiling” and teamed up with the NAACP and ACLU to appeal the verdict. They disputed the claims of the key witness, a federally trained undercover agent with a criminal record of his own, and their efforts resulted in the exoneration of all of the defendants. Tulia, Texas challenges viewers to question the deep ties between race, poverty and the criminal justice system in this country. (Producers/Directors: Cassandra Herrman and Kelly Whalen. 54 minutes, 2008)

Here's the link.  You may have to fill out a short survey first, but it's worth the couple of minutes.