In this image taken from video, former Minneapolis police Officer Derek Chauvin addresses the court as Hennepin County Judge Peter Cahill presides over Chauvin’s sentencing, Friday, June 25, 2021, at the Hennepin County Courthouse in Minneapolis. (Court TV via AP, Pool)

Former Minneapolis police Officer Derek Chauvin has been sentenced to 22 1/2 years in prison for the murder of George Floyd, whose dying gasps under Chauvin’s knee led to the biggest outcry against racial injustice in the U.S. in generations.

In this image from video, former Minneapolis police Officer Derek Chauvin listens as the verdict is read in his trial for the 2020 death of George Floyd, Tuesday, April 20, 2021, at the Hennepin County Courthouse in Minneapolis, Minn. (Court TV via AP, Pool)

Former Minneapolis police Officer Derek Chauvin faces sentencing Friday in the death of George Floyd, with a judge weighing a prison term experts say could be as much as 30 years. Here’s what to watch for in a hearing that could run as long as two hours.

In this image from video, former Minneapolis police Officer Derek Chauvin listens as the verdict is read in his trial for the 2020 death of George Floyd, Tuesday, April 20, 2021, at the Hennepin County Courthouse in Minneapolis, Minn. (Court TV via AP, Pool)

The former Minneapolis police officer convicted of murder in George Floyd’s death made his initial appearance Tuesday on federal charges alleging he violated Floyd’s civil rights by pinning the Black man to the pavement with his knee.

In this Jan. 18, 2019, file photo, former Chicago police Officer Jason Van Dyke is escorted into the courtroom for his sentencing hearing in Chicago, for the 2014 shooting of Laquan McDonald. (Antonio Perez / Chicago Tribune via AP, Pool, File)

As former Minneapolis Police Officer Derek Chauvin waits to be sentenced for killing George Floyd, it’s worth remembering what happened in Chicago after a jury convicted a white police officer in the shooting death of 17-year-old Laquan McDonald.

A youth activist holds a sign as part of a peaceful march to Mayor Lori Lightfoot’s home on Aug. 13, 2020 to demand the removal of resource officers from Chicago Public Schools. (WTTW News)
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Chicago has been grappling with issues surrounding policing long before the murder of George Floyd. But as it did across the country, Floyd’s killing led to outrage and calls for change, including campaigns to defund the police.

Benjamin Crump, front center, along with Gianna Floyd, daughter of George Floyd, and her mother Roxie Washington, and others talk with reporters after meeting with President Joe Biden at the White House, Tuesday, May 25, 2021, in Washington. (AP Photo / Evan Vucci)

George Floyd’s family met with President Joe Biden and Vice President Kamala Harris at the White House on Tuesday to commemorate their loss and continue to push for legislation.

People take a knee during a moment of silence on the one year anniversary of George Floyd’s death on Tuesday, May 25, 2021, in Minneapolis, Minn. (AP Photo / Christian Monterrosa)

George Floyd was honored Tuesday with a moment of silence in the city where he died at the hands of police, a death captured on a wrenching bystander video that galvanized the racial justice movement and continues to ripple a year later.

A screenshot from the “Voices” community conversation on Monday, May 24, 2021. (WTTW News)

“Chicago Tonight: Black Voices” host Brandis Friedman and a panel of guests discuss the murder of George Floyd on the anniversary of his death, and where the racial justice movement stands today. Watch it now.

Artist Dennis Owes, 31, from Ghana gives the last touch to his portrait of George Floyd during a rally on Sunday, May 23, 2021, in Brooklyn borough of New York. (AP Photo / Eduardo Munoz Alvarez)

Parents and siblings of Black men killed by police urged people during a discussion in the city where George Floyd was killed a year ago to join them in pursuing legal changes they say can make similar deaths less likely in the future.

Demonstrators march in Chicago on Wednesday, June 24, 2020 to show their support for removing police officers from schools. (WTTW News)

Following one of Chicago’s deadliest weekends of 2021, and with the anniversary of George Floyd’s murder and Memorial Day ahead, police Superintendent David Brown says he plans to continue limiting time off for officers this week.

Protesters march along Dearborn Street while holding a sign honoring George Floyd on Saturday, May 30, 2020. (Evan Garcia / WTTW News)

One year ago, the world watched a horrific, pivotal video of George Floyd gasping for air under the knee of former police Officer Derek Chauvin. We reflect on the lessons of the past year as local and national organizations continue their push for social justice and equity.

In this Aug. 28, 2020, file photo, people carry posters with George Floyd on them as they march from the Lincoln Memorial to the Martin Luther King Jr. Memorial in Washington. (AP Photo / Carolyn Kaster, File)
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President Joe Biden will host George Floyd’s family at the White House on Tuesday to mark the first anniversary of his death at the hands of a white Minneapolis police officer.

This combination of photos provided by the Hennepin County Sheriff’s Office in Minnesota on Wednesday, June 3, 2020, shows Minneapolis Police Officers Derek Chauvin, from left, J. Alexander Kueng, Thomas Lane and Tou Thao.(Hennepin County Sheriff’s Office via AP, File)

The trial of three former Minneapolis police officers charged with aiding and abetting in the death of George Floyd  will be pushed back to March 2022, in part to allow the publicity over Derek Chauvin’s conviction to cool off, a judge ruled Thursday.

In this image from video, former Minneapolis police Officer Derek Chauvin listens as the verdict is read in his trial for the 2020 death of George Floyd, Tuesday, April 20, 2021, at the Hennepin County Courthouse in Minneapolis, Minn. (Court TV via AP, Pool)

A Minnesota judge has ruled that there were aggravating factors in the death of George Floyd, paving the way for the possibility of a longer sentence for Derek Chauvin, according to an order made public Wednesday.

This combination of photos provided by the Hennepin County Sheriff’s Office in Minnesota on Wednesday, June 3, 2020, shows Minneapolis Police Officers Derek Chauvin, from left, J. Alexander Kueng, Thomas Lane and Tou Thao.(Hennepin County Sheriff’s Office via AP, File)

A federal grand jury has indicted the four former Minneapolis police officers involved in George Floyd’s arrest and death, accusing them of violating the Black man’s constitutional rights, according to indictments unsealed Friday.

A group of approximately 100 protesters gathered near the Cloud Gate sculpture in Millennium Park to protest police brutality on April 13, 2021. (WTTW News)

After a three-week trial, former Minneapolis police Officer Derek Chauvin was found guilty of murdering George Floyd, a conviction President Joe Biden called “a giant step forward in the march toward justice in America.” We discuss the verdict, the reaction and what comes next with local journalists.