Real Estate in North East Ohio - Did government do it?

If you own real estate in North East Ohio - in many, many communities - your real estate may be valueless.  In fact, your real estate may be a financial  liability.

How did this happen?    

Has our corrupt, ignorant, and inept local governments caused this massive loss in equity?

Is it Rust Belt deterioration?

Federal banking policy?

Or is it "market forces"?  Racism?

Might as well be a nuclear bomb if it is your property - which you can't sell, which is vandalized, and takes on local color.