Were 5,000 prisoners shot in the head in the wake of Hurricane Katrina? Presidential candidate Cynthia McKinney reveals that the mother of a man hired to process the bodies shared this story with her, and that she had confirmed it with Red Cross sources (who chose not to identify themselves).
5,000 EXECUTED (~2 min.):
Whatever the circumstances... this is a major concern, but this concern is magnified by the incredibly high (and rising) prison population in the US. Graphs below are from Wikipedia entry Incarceration in the United States. Click on each graph to view larger version: