Dog Fighting - bloodsport or just blood?

The country was shocked in 2008 as Michael Vick was arrested for dog fighting. He got convicted and served time but thousands of others keep this bloody "sport" alive and well. In the basements of America's homes innocent dogs are set to kill each other, for money and for fun. What kinds of people engage in this archaic behavior, why won't they stop? A former dog fighter gives us the inside view into a this dark American hole!