Ask Jerry Brown in Oakland, CA. He turned that city around in five years. My father worked there for 20 years, supervising custodians who cleaned up the BART stations there.
Jerry was a pretty liberal D in the 70's. You wouldn't recognize him today. He brought business in, reduced crime, fixed the schools, etc. He brought in a lot of early real estate investment in the mid 90's. The ROI on that investment is somewhere around 340%.
I'll bet you can buy acres of Camden downtown land for pennies on a dollar. With the right people and the right plan Camden could be flipped.
First step, issue a 12 gauge and 20 shells to every man and woman over 40 and make them all deputies.
Second step, break every drug dealer's every toy and shoot any who resist, carting everyone known off to the slammer.
After that it gets easy...