Chicago Police Supt. Larry Snelling said the officer who unintentionally shot and killed Officer Krystal Rivera is dealing with difficult emotions, and he's urging the public not to draw conclusions about how Rivera died.

What that curfew would be used for is deterrence. We would like to have something like that in advance when we know that there’s the possibility of a gathering that’s going to lead to violence in a particular area that has a history” of it,