In American history, the Shootout at the OK Corral is legend.
There can be no such legendary event in present day Chicago simply there are no officers that can enforce the law. Should they try, they will be hung by defense lawyers.
More people are shot dead in Chicago every weekend than in legendary Tombstone. More people are shot, wounded and die in Chicago than ever in Afghanistan.
Chicago is no longer America. Chicago is a tyranny of lawyers
In one year more people are shot in Chicago than everyone shot in western gun slinger mano-a-mano gunfights in history added together.