Which features of a city are most problematic from a city management point of view?

Which features of a city are most problematic from a city management point of view? Description Which features of a city are most problematic from a city management point of view? Are these features the same when assuming a social justice perspective? Use as many examples from the following sources as possible. Please do not exceed 250 words. Sources: http://qz.com/666153/megacities-not-nations-are-the-worlds-most-dominant-enduring-social-structures-adapted-from-connectography/ http://www.citylab.com/weather/2016/06/global-light-pollution-cities-maps/486515/ https://beyondthemap.withgoogle.com/en-us/