Herman Webster Mudgett, better known under the alias of Dr. Henry Howard Holmes, was one of the first documented American serial killers in the modern sense of the term. In Chicago at the time of the 1893 World's Fair, Holmes opened a hotel which he had designed and built for himself specifically with murder in mind (the upper two floors contained his personal office and a maze of over 100 windowless rooms with doorways opening to brick walls, oddly-angled hallways, stairways to nowhere, doors openable only from the outside, and a host of other strange and labyrinthine constructions). While he confessed to 27 murders, of which four were confirmed, his actual body count could be as high as 200. He took an unknown number of his victims from the 1893 Chicago World's Fair, which was less than two miles away, to his "World's Fair" hotel.

A Tribune analysis shows Taser use has jumped fivefold in the city since 2008 and suburban agencies that were surveyed were on pace to double their use, as departments equipped more officers with the devices. Chicago police were deploying Tasers at a rate of more than twice a day in 2011.

At some of the meetings, the politicians arrived with campaign materials and occasionally with aides. The sessions were organized much like corporate-style job fairs. The gang representatives conducted hourlong interviews, one after the other, talking to as many as five candidates in a single evening. Like supplicants, the politicians came into the room alone and sat before the gang representatives, who sat behind a long table.