>>> GOOD EVENING, AND WELCOME TO "CHICAGO TONIGHT," I'M BRANDIS FRIEDMAN.

>> AND I'M PARIS SCHUTZ.

OUR TOP STORY TONIGHT.

>> TOGETHER WE CAN BUILD A BETTER, STRONGER.

>> CHICAGO'S 57th MAYOR IS SWORN INTO OFFICE.

WITH IT, THE BRANDON JOHNSON ERA AT CITY HALL IS OFF AND RUNNING.

>>> JOHNSON ISSUED A SERIES OF EXECUTIVE ORDERS THIS AFTERNOON COVERING ITEMS LIKE YOUTH EMPLOYMENT AND IMMIGRANT AND REFUGEE RIGHTS, JUST AFTER HIS INAUGURATION CEREMONY AT CREDIT UNION ONE ARENA THAT HAD THE LOOK AND FEEL OF A REVIVAL.

>> ACCORDING TO THE BEST OF MY ABILITY.

>> SIR, YOU ARE INSTALLED.

>> Reporter: WITH THAT, BRANDON JOHNSON BECAME CHICAGO'S 57th MAYOR JUST BEFORE NOON TODAY.

THE MAYOR BEGAN BY THANKING HIS PREDECESSOR AND THEN STRUCK A MORE HARMONIOUS CORD WITH COUNCIL MEMBERS THAN LIGHTFOOT DID AT HER INAUGURAL FOUR YEARS AGO.

>> NOW WE WON'T ALWAYS AGREE, BUT I WON'T EVER QUESTION YOUR MOTIVES OR YOUR COMMITMENT, AND I'LL ALWAYS DO MY PART TO FIND COMMON GROUND.

>> Reporter: JOHNSON BEGAN HIS DAY ON VISITING SITES LIKE THE MIDDLE SCHOOL IN AUSTIN, WHERE HE RESIDES.

HIS SPEECH CLOCKED IN AT NEARLY 40 MINUTES AND REPEATEDLY MADE REFERENCE TO HIS BELIEF IF THE SOUL OF CHICAGO.

HE SAID HE'S PREPARED FOR THE CHALLENGES AHEAD.

>> WE HAVE A STRUCTURAL DEFICIT, AND WE HAVE TO INVEST IN PEOPLE.

WE HAVE TO DO THAT WITHOUT BREAKING THE BACKS OF WORKING PEOPLE WITH FINES, FEES, AND PROPERTY, THATS.

>> Reporter: AMONG JOHNSON'S IMMEDIATE TASKS, FINDING SHELTERS FOR MIGRANT ARRIVALS WITHOUT ALIEN ATING LONG-TIME RESIDENTS WHO COMPLAIN OF A LACK OF RESOURCES IN THEIR OWN COMMUNITIES.

>> WE MUST REJECT A ZERO FORM BETWEEN INVESTING, THOSE WHO HAVE BEEN HERE FOR DECADES AND SUPPORTING THOSE WHO HAVE BEEN SENT HERE ON A BUS EVEN THIS MORNING.

WE CAN DO BOTH, CHICAGO.

>> Reporter: JOHNSON ALSO PROMISED TO REOPEN SHUTTERED MENTAL HEALTH CLINICS, A NEW APPROACH TO PUBLIC SAFETY, AND PAYING TRIBUTE TO RECENTLY SLAIN CHICAGO OFFICER ARIANA PRESTON.

>> SHE BELIEVED THROUGH PUBLIC SERVICE, SHE COULD BE A CONDUIT FOR JUSTICE.

>> Reporter: PACKING UIC'S CREDIT ONE ARENA FOR THE CEREMONY, WHICH ALSO INCLUDED THE SWEARING IN OF A DIVERSE CITY COUNCIL THAT WELCOMES 13 NEW MEMBERS.

ONLOOKERS GAVE JOHNSON HIGH REMARKS FOR A HOPEFUL AND POWERFUL INAUGURAL SPEECH, BUTTAGE BUT ACKNOWLEDGED THEY CAN'T TACKLE THE CITY ALONE.

>> AND WE MAKE A MISTAKE WHEN WE COLLECT SOMEBODY FROM THE CANDIDATE, GOVERNOR, MAYOR, AND THEN WE WANT THEM TO DO IT AND WE ALL SIT BACK.

IT'S NOT GOING TO HAPPEN.

>> AND TO INVEST IN THE NEIGHBORHOODS ARE THE SAME AS A LOT OF PEOPLE IN THE BUSINESS COMMUNITY, WHICH WANT GROWTH AND THEY ALSO DON'T WANT PROPERTY TAXES.

>> HE'S NOT GOING TO BE AN EXTREMIST.

HE'S NOT GOING TO RUN CHICAGO TO THE GROUND.

HE'S, IN FACT, TRYING TO REBUILD CHICAGO.

THE WAY TO DO THAT IS GOT TO BE EVERYBODY IN AND NOBODY OUT.

>> WHETHER YOU LIVE IN JEFFERSON PARK OR MORGAN PARK OR MCKINLEY PARK OR GAGE PARK OR IN HUMBOLDT PARK, I'M TALKING ABOUT A REVIVAL IN THE CITY OF CHICAGO.

>> THE CEREMONY ALSO INCLUDED A ROOF RAISING PERFORMANCE FROM GOSPEL STAR KAREN CLARK SHEAR.