Population Density Change in Chicago

The changes from Chicago racial diversity are an interesting topic within its self. But I chose this map because I think it poorly displays it. It is hard to tell whats going on without reading the topic. It just seems the amount of people just increased and neighborhoods have got more dense. They explain the change well and more other information in the article though. The links describe more detail about the change in the neighborhood and gentrification through the city. 

http://www.lib.niu.edu/1988/ii880524.html

http://www.chicagopublicradio.org/news/why-are-we-still-collecting-taxes-prevent-white-flight-chicago-110325