One can read about the Navy Pier and Chicago Ridge incidents that Flaherty speaks of in the on-line version of the Chicago Tribune - with one important distinction: despite the fact that hundreds of rioters participated in each incident, the Trib reporters apparently were unable to notice their makeup in terms of age, sex and race.
Which is standard operating procedure for the Tribune.
Just wait until the EBT system implodes, and hunger begins to bite hard.
There will be more street savage violence since it allows them to blame their self-inflicted pathologies on Whitey.