Detroit: The US City On Brink Of Collapse

what killed Detroit was violent, incompetent people scaring the competent people away from the city, leading to the incompetent people taking over the city, which of course caused the city to fall apart. These violent, incompetent people were mostly black, while the competent people were mostly white. These violent, incompetent blacks are also scaring away or holding back potentially competent blacks. The solution is to get rid of this extreme violence, which can't be justified by poverty.