I'm gonna quote a guy from another forum who put it pretty much exactly how i feel...
"One other exacerbating factor with Detroit and other cities is a welfare system that stops natural movement of the workforce. Many cities around the country have had a period of success followed by a bust when major industries failed.
Back in the bad old days, people would then migrate to other areas where they could find jobs.
Now, the welfare state allows them to stay put in an area where there just aren't enough jobs for the population. They can exist on welfare and other social programs, but at poverty levels. An area with a lot of people living at poverty levels without jobs breeds crime. People have to get money somewhere.
The increase in crime drives out the people who are educated, want to work, and have skills they can take elsewhere.
Once the working middle class decides that the negatives are too great to put up with, and they leave, you lose the tax base.
It becomes a death spiral for those who are left, with increasingly bad schools, higher crime and fewer jobs.
Increasing social programs does nothing to solve the problem of no jobs."
and regarding Africa. Just look at South Africa, prosperous country, very much like Canada who had the segregation problem. Look at it now, Blacks are in power and the country is in shitter, Afrikaan white farmers who fed the cities fled and now the farms lay in ruin, civil unrest, among highest crime per capita in the world. Basically in two generations destroyed what took hundreds of years to build.
