Keanu gives interesting insights.
Another thing is that the import of autos from Japan, Germany, Sweden and other foreign countries had a major impact on the jobs and work force of Detroit. As was noted, Detroit was a one trick pony when it came to jobs and industry manufacturing; the auto and auto related products. Plus any company, from Ford, GMC, etc was making pretty much dull and sub-standard products for a very long time, thinking they have the American buyers where they wanted them. With the newer foreign autos, with upped performance and designs, they found a ready buying Americans. Took many years before the U.S. auto makers understood this.
Blacks, by the thousands, came up from the south during WWII for better paying labor or semi skilled jobs, stayed and raised family's. This labor flow continued for many years. The actually educational system, in Detroit, was very good and rivaled anywhere else in the U.S. The surrounding area has some of the better university's, even today. Could even say that black are the actually victims of the few controlling political blacks who handled the continual funds and grants received from Washington and other large private agency's. Creating a slave mentality in the process in the name of welfare favors.
The term White Flight is said to have started within urban Detroit. Blacks have controlled city management for decades. This week is the 50th year of the War On Poverty, a complete failure, as with 300 trillion being spent on it's efforts. Most thinking people want to be fair minded, but some of the conclusions are quite obvious.