In this image from video, defense attorney Eric Nelson questions Dr. Andrew Baker, Hennepin County Chief Medical Examiner, as Hennepin County Judge Peter Cahill presides Friday, April 9, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis, Minn. (Court TV via AP, Pool)

Derek Chauvin’s defense attorney appears to be making a series of moves aimed at undermining a dominant narrative of George Floyd’s death — established through bystander video — of a reckless, arrogant cop ignoring a man’s “I can’t breathe” cries as his life is snuffed out.

Crucial testimony is expected April 9, 2021 when the medical examiner who performed George Floyd’s autopsy takes the stand. Defense attorney Eric Nelson, left, and defendant former Minneapolis police Officer Derek Chauvin are seen during the trial proceedings on April 8, 2021. (CNN Pool)

Hennepin County Chief Medical Examiner Dr. Andrew Baker’s testimony could be crucial, as Baker ruled Floyd’s death last May a homicide and identified the cause as “cardiopulmonary arrest” that occurred during “law enforcement subdual, restraint, and neck compression.”

In this image from video, Dr. Martin Tobin testifies as Hennepin County Judge Peter Cahill presides Thursday, April 8, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis, Minn. (Court TV via AP, Pool)

George Floyd died of a lack of oxygen from being pinned to the pavement with a knee on his neck, medical experts testified at former Officer Derek Chauvin’s murder trial Thursday, emphatically rejecting the defense theory that Floyd’s drug use and underlying health problems killed him.

In this image from video, witness Jody Stiger, a Los Angeles Police Department sergeant testifies as Hennepin County Judge Peter Cahill presides Wednesday, April 7, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis. (Court TV via AP, Pool)

Officer Derek Chauvin had his knee on George Floyd’s  neck — and was bearing down with most of his weight — the entire 9 1/2 minutes the Black man lay facedown with his hands cuffed behind his back, a use-of-force expert testified Wednesday at Chauvin’s murder trial. 

In this image from video, Minneapolis Police Lt. Johnny Mercil, a use of force trainer, testifies as Hennepin County Judge Peter Cahill presides Tuesday, April 6, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis. (Court TV via AP, Pool)

Minneapolis police are taught to restrain combative suspects with a knee on their back or shoulders if necessary but are told to “stay away from the neck when possible,” a department use-of-force instructor testified Tuesday at former Officer Derek Chauvin’s murder trial.

In this image from video, witness Minneapolis Police Chief Medaria Arradondo testifies as Hennepin County Judge Peter Cahill presides Monday, April 5, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis. (Court TV via AP, Pool)

The Minneapolis police chief testified Monday that now-fired Officer Derek Chauvin violated departmental policy — and went against “our principles and the values that we have” — in pressing his knee on George Floyd’s neck and keeping him down after Floyd had stopped resisting and was in distress.

Charles McMillian becomes emotional as he answers questions at the trial of former Minneapolis police Officer Derek Chauvin in the Hennepin County Courthouse in Minneapolis, Minn. Chauvin is charged in the May 25, 2020 death of George Floyd. (Court TV via AP, Pool, File)

The televised trial of Derek Chauvin, the former white police officer charged in the death of George Floyd, has provoked strong emotions among many Black men and women — all tinged with an underlying dread that it could yield yet another devastating disappointment. 

Black Lives Matter flags fly and line the fence surrounding the Hennepin County Government Center Friday, April 2, 2021 in Minneapolis where the trial for former Minneapolis police officer Derek Chauvin continues. (AP Photo / Jim Mone)

Kneeling on George Floyd’s neck while he was handcuffed and lying on his stomach was top-tier, deadly force and “totally unnecessary,” the head of the Minneapolis Police Department’s homicide division testified Friday.

In this image from video, witness Courteney Ross answers questions as Hennepin County Judge Peter Cahill presides Thursday, April 1, 2021, in the trial of former Minneapolis police Officer Derek Chauvin at the Hennepin County Courthouse in Minneapolis, Minn. (Court TV via AP, Pool)

George Floyd’s girlfriend tearfully told a jury Thursday the story of how they met — at a Salvation Army shelter where he was a security guard with “this great, deep Southern voice, raspy” — and how they both struggled mightily with an addiction to opioids.

In this image from store video, George Floyd, right, is seen inside Cup Foods on May 25, 2020, in Minneapolis. Former Minneapolis Police officer Derek Chauvin is on trial for the death of Floyd at the Hennepin County Courthouse in Minneapolis, Minn. (Court TV via AP, Pool)

After the ambulance took George Floyd away, the Minneapolis officer who had pinned his knee on the Black man’s neck defended himself to a bystander by saying Floyd was “a sizable guy” and “probably on something,” according to police video played in court Wednesday.

A picture of George Floyd hangs on a fence outside the Hennepin County Government Center, Tuesday, March 30, 2021, in Minneapolis where the trial for former Minneapolis police officer Derek Chauvin continues. (AP Photo / Jim Mone)

Onlookers grew increasingly angry as they begged Minneapolis Officer Derek Chauvin to take his knee off George Floyd’s neck, but Chauvin would not let up, and another officer forced back members of the crowd who tried to intervene, witnesses testified Tuesday at Chauvin’s murder trial.

This image from a police body camera shows people gathering as former Minneapolis police officer Derek Chauvin was recorded pressing his knee on George Floyd’s neck for several minutes as onlookers yelled at Chauvin to get off and Floyd saying that he couldn’t breathe on May 25, 2020 in Minneapolis. (Minneapolis Police Department via AP)

The video of George Floyd gasping for breath was essentially Exhibit A as the former Minneapolis police officer who pressed his knee on the Black man’s neck went on trial Monday on charges of murder and manslaughter.

In this screen grab from video, defense attorney Eric Nelson, left, defendant and former Minneapolis police officer Derek Chauvin, right, and Nelson’s assistant Amy Voss, back, introduce themselves to potential jurors as Hennepin County Judge Peter Cahill Tuesday, March 23, 2021, presides over jury selection in the trial of Chauvin at the Hennepin County Courthouse in Minneapolis, Minn. Chauvin is charged in the May 25, 2020 death of George Floyd. (Court TV, via AP, Pool)

Jurors at all trials feel pressure, knowing their decisions will alter lives. But the weight on jurors in Minneapolis is in a whole different category as they’ll be asked whether to assign guilt in the death of a Black man that prompted some of the largest protests in U.S. history.

In this screen grab from video, defense attorney Eric Nelson, left, defendant and former Minneapolis police officer Derek Chauvin, right, and Nelson’s assistant Amy Voss, back, introduce themselves to potential jurors as Hennepin County Judge Peter Cahill Tuesday, March 23, 2021, presides over jury selection in the trial of Chauvin at the Hennepin County Courthouse in Minneapolis, Minn. Chauvin is charged in the May 25, 2020 death of George Floyd. (Court TV, via AP, Pool)

A jury has been seated for the trial of a former Minneapolis police officer in George Floyd’s death, with opening statements set for March 29 in a case that led to weeks of protests and a national soul-searching about racial justice.

Cortez Rice, left, of Minneapolis, sits with others in the middle of Hennepin Avenue on Sunday, March 7, 2021, in Minneapolis, Minn., to mourn the death of George Floyd a day before jury selection is set to begin in the trial of former Minneapolis officer Derek Chauvin, who is charged in Floyd’s death. (Jerry Holt / Star Tribune via AP)

The attorney for George Floyd’s family said Friday that a $27 million settlement of a federal lawsuit by the city of Minneapolis is the largest pretrial civil rights settlement ever.

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

Floyd family attorney Ben Crump called it the largest pretrial settlement ever for a civil rights claim, and thanked city leaders for “showing you care about George Floyd.”