In 20 years Detroit will be the epitome of urban farms. That’s what they need to do, viz. raze the entire city and then farm the land.
The only problem I have with your idea is that the ghetto’s will just move to another city and it will start all over again. We need to do something about the people that cause our big cities to get into this condition. That is the big question. What do we do with all these people, people that really don’t care about our country.