Detroit is growing back these days. Even though a lot of it is abandoned, it's still hard to buy the old houses because you have to pay their back taxes or something, but it is coming back thanks to companies like Quicken.

As for crime, it's some economic and some that Detroit was the center of the car industry which means everyone was huffing leaded gasoline fumes for decades. In Europe everyone is still breathing in diesel, which just kills you rather than makes you a rage monster.