No, conspiracy is when you can't prove the statement, but 'know' something's up. Google earth shows there's entire blocks within the city that have been torn down. No conspiracy, they're gone.
I remember years ago my city was dealing with the problem of inner city. They called it 'doughnut city' back then. The inside dies, the outside lives....looks like a doughnut I guess? In any case, they went through a planning stage to revitalize the downtown area, and have successfully done so, and continue to. There have been a few cases of landlord neglect, and a few houses torn down as a result in the hood, but not many.
edit: In my town, this revitalized part of town is also now the 'yuppy' part of town....at least we know where to barricade off?
I think a lot of the problem stems from too much rental in the poor neighborhoods. I have relatives that live in small towns that are nearly completely owned by one person. If you want to rent, you go to him. WAY too much rental in this country, and housing prices so high, some that need to purchase, can't afford it.