From the article: “A mass migration of some of Illinois’ most dangerous criminals is under way as state officials began shutting down the Tamms Correctional Center and other prison facilities.”
Anytime you shut down a facility, you have disgruntled staff at both the closing facility and the receiving facilities, which are now more overcrowded, not to mention the effects of the disruption on the inmate population. Especially for supermax/maximum facilities, each institution has a pecking order, with the gangs knowing their own hierarchy and their position in terms of numbers and strength relative to the other gangs. There will be some repositioning that takes place at the receiving institutions, so expect assault and use of force numbers to spike.
Read more here.