During the housing boom, many Americans got into buying cheap houses and rehabbing them for profit. Over an 18-year period, Mark Post bought six homes in his neighborhood - but not to flip them. Mark had it in mind he could help make his community a better place.
When he first moved to the Cherry Hill neighborhood of Grand Rapids, M.I., Mark says many of the homes were used by drug dealers and prostitution rings at night. Today, his neighborhood is home to a diverse group of mixed-income residents and crime has gone way down. Mark talks with Dick about his role in those changes, and how he fits into debates about gentrification.