Each of these purple specks — or black holes, depending on your perspective — represents a demolition permit issued by the city in 2012. The planning and development department has posted this and a few other maps online with an overview of demographic data.
After the jump, you can see in more detail the demos inside the Loop from 2012 and 2011, juxtaposed with other maps showing the permits for single- and multi-family construction. You know. For balance: