>> The Chicago City Council voted 27 to 20 today to give the Chicago Police Department the power to preemptively impose a curfew anywhere in the city and begin enforcing it within just 30 minutes.

This is in defiance of Mayor Brandon Johnson who said the measure would hurt efforts to build trust between young people and police officers.

Here's a bit of that debate from City Council.

>> This curfew ordinance is simply one more tool in that particular tool box.

It will work.

>> I will veto this ordinance because it is counterproductive to the progress that we've made in reducing crime violence in our city.

It would create tensions between residents and law enforcement at a time when we have worked so hard to rebuild that trust.

>> W t Tw News reporter Heather Sharon joins us now live from City Hall with more on this decision.

Heather?

So after that narrow vote, eyes, of course, are turning towards Mayor Brandon Johnson, who has told us what he's going to do.

>> That's right.

He will issue with the first mayoral veto in Chicago in 19 years to prevent this curfew ordinance from becoming the law of the land.

As we heard, he says it will set back the progress.

He feels his administration has made in restoring trust between the police department and the youth of Chicago.

Now today's narrow vote came after a fierce debate where older people said that this measure would help them prevent violent teen takeovers that earlier this spring injured 2 people in Streeterville.

But other older people said it would be ineffective and it would essentially send a message to teens, particularly black and Latino teens that they were not welcome outside their own neighborhoods.

>> So Heather, Today's vote came after months of debate and controversy.

Remind us what CPD now has the power to do with this.

>> Assuming that the mayor does make good on his threat to veto, they would have had the power to essentially declare anywhere in the city off limits for people under 18.

If they had knowledge of a planned large gathering that they had evidence to believe that would turn violent.

Now, a lot of older people had a lot of questions about how exactly that standard would be met.

The issue became confused and controversial after Chicago Police Superintendent Larry Snelling told a federal judge that he would never enforce a curfew with just 30 minutes.

Notice for fear that it would sweep up otherwise.

Law-abiding teens just going about their business.

So it was really not clear if this measure even was allowed to go into effect, how would be would be used?

That is another example of the differing opinions about how Chicago should be kept safe even after the city has seen stained and significant drops in both homicides and shootings since the beginning of the year.

>> And had a why was this so controversial?

>> Well, this is the fundamental issue that Chicago has been grappling with for decades.

How do you balance the need to keep people safe in Chicago with people's civil liberties?

That is why the Chicago Police Department essentially under a federal court order to perform and it is a direct challenge.

What Mayor Bridge young son says he was elected to do, which was essentially to remake CPD into yes, a law enforcement agency, but to beef up the city's other aspects to prevent crime from happening rather, just enforcing the law once a crime had been committed.

It.

>> All right.

How Detroit City Hall for us.

Thank you.

And we'll have more on this story later in the program.

And of course, you can read Heather's