From statistician David Burge: 
1 out of 115 people in the US live in the city of Chicago. 1 out of 22 gun homicides in the US happen in the city of Chicago.
— David Burge (@iowahawkblog) January 10, 2013 
Here are some more facts about Chicago:
- The State of Illinois has abolished the death penalty.
- Chicago has particularly repressive  gun control laws.
- The racial make-up  of Chicago is 32% black, 45% white, 31% non Hispanic white. 28% Hispanic of any race, 5% Asian, and 3% from two or more races.Over 21 percent of the population is foreign-born. 
- Chicago is Barack Obama's home town.