Thanks to a "lurker" I've started to read 'The Truth About Chicago’s Crime Rates
The city’s drop in crime has been nothing short of miraculous. Here’s what’s behind the unbelievable numbers' on:http://www.chicagomag.com/Chicago-Ma...o-crime-rates/

How about murders that are not murders:
How can you be tied to a chair and gagged, with no clothes on, and that’s a [noncriminal] death investigation?.....We identified 10 people, including Groves, who were beaten, burned, suffocated, or shot to death in 2013 and whose cases were reclassified as death investigations, downgraded to more minor crimes, or even closed as noncriminal incidents—all for illogical or, at best, unclear reasons.
Or, with my emphasis:
Take “index crimes”: the eight violent and property crimes that virtually all U.S. cities supply to the Federal Bureau of Investigation for its Uniform Crime Report. According to police figures, the number of these crimes plunged by 56 percent citywide from 2010 to 2013—an average of nearly 19 percent per year—a reduction that borders on the miraculous. To put these numbers in perspective: From 1993, when index crimes peaked, to 2010, the last full year under McCarthy’s predecessor, Jody Weis, the average annual decline was less than 4 percent.