The presentation of proof within the trial of Derek Chauvin, the previous Minneapolis police officer charged with homicide within the loss of life of George Floyd, concluded on Thursday with out testimony from Mr. Chauvin himself.

Lawyers will give their concluding arguments on Monday, after which the jury will begin its own deliberations. Whether Mr. Chauvin would testify was a serious query on this trial, one of many most-viewed in a long time. Though the loss of life of Mr. Floyd sparked a nationwide reckoning across the intersection of race and policing — and ignited a wave of protests that rocked large cities and small cities throughout America — the public has heard very little from the previous officer.

Throughout the trial, Mr. Chauvin displayed little, if any, emotion. (With a face masks, it may be tougher to see an individual’s expressions.) He listened and took notes as individuals who watched the arrest in individual broke down in tears on the stand, and as quite a few knowledgeable witnesses from the prosecution positioned the blame of Mr. Floyd’s death squarely on his shoulders.

Mr. Chauvin’s defense group known as two knowledgeable witnesses to the stand this week, together with a handful of different witnesses, most of whom spoke solely briefly. A use-of-force knowledgeable testified that he acted inside the bounds of regular policing when he knelt on Mr. Floyd for 9 minutes and 29 seconds, and a medical knowledgeable stated the restraint was not a contributing think about Mr. Floyd’s loss of life.

Both witnesses confronted dogged cross-examination from prosecuting attorneys. And on Thursday, prosecutors known as again to the stand Dr. Martin J. Tobin, a pulmonologist, who refuted a notion pushed by the defense’s medical knowledgeable that carbon monoxide from automobile exhaust contributed to Mr. Floyd’s loss of life. Here are the takeaways from Mr. Chauvin’s defense.

• Mr. Chauvin told the judge on Thursday that he wouldn’t testify, invoking his Fifth Amendment proper to keep away from self-incrimination. He faces second-degree homicide, third-degree homicide and second-degree manslaughter expenses for the loss of life of Mr. Floyd. Eric J. Nelson, Mr. Chauvin’s legal professional, stated that they had a number of discussions about whether or not he ought to testify, together with one prolonged assembly on Wednesday. Judge Peter A. Cahill informed Mr. Chauvin that the jurors could be instructed to not maintain his determination to keep away from testifying towards him.

• Prosecutors called Dr. Tobin, the pulmonologist, back to the stand on Thursday to rebut the notion that automobile exhaust contributed to Mr. Floyd’s loss of life. One of the 2 knowledgeable witnesses from the defense, Dr. David Fowler, a former chief health worker of Maryland, testified on Wednesday that carbon monoxide from the exhaust of the police cruiser that Mr. Floyd was pinned subsequent to may need been a contributing issue. He positioned extra emphasis on drug use and pre-existing coronary heart circumstances, saying there have been seemingly method components at play. Ultimately, he stated Mr. Floyd’s method of loss of life was “undetermined.”

  Dr. Tobin stated the carbon monoxide argument was “simply wrong.” He stated exams carried out by Hennepin County confirmed that Mr. Floyd had a standard degree of oxygen saturation in his blood, and that his degree of carboxyhemoglobin — one thing shaped within the blood throughout by carbon monoxide poisoning — couldn’t have been greater than 2 p.c; Dr. Fowler stated it may need been as excessive as 10 to 18 p.c, although he acknowledged he had not seen any exams to verify his assumption.

• One of Dr. Fowler’s major assertions was that the prone position where Mr. Floyd was kept for nine and a half minutes was safe. He cited a number of research to assist this notion, and stated there was no arduous proof that placing somebody in a susceptible place with their fingers cuffed behind their backs for an prolonged time frame might be harmful. Some prosecution witnesses criticized the research that Dr. Fowler cited, saying they don’t mirror real-world policing. They additionally stated that it’s well-known amongst cops that suspects shouldn’t be stored within the susceptible place for too lengthy as a result of it could actually make it tougher to breathe, significantly when the suspect is being pinned down beneath the load of an officer. In a win for the prosecution, Dr. Fowler stated Mr. Floyd should have been given medical aid.

• The different major witness from the defense was Barry Brodd, an knowledgeable on using pressure whose testimony contradicted that of a number of witnesses known as by the prosecution, together with the chief of the Minneapolis Police Department. Mr. Brodd testified that the officers who arrested Mr. Floyd had acted appropriately every step of the way, and even stated that the restraint utilized by Mr. Chauvin didn’t represent a “use of force” in any respect.

  During cross-examination, although, he conceded that the restraint did qualify as a use of pressure beneath the insurance policies of the Minneapolis Police Department. He additionally stated that the susceptible place doesn’t usually harm suspects and that it was an accepted technique to management somebody throughout an arrest. But he confronted powerful cross-examination on this level, when a prosecutor performed physique digital camera footage from the arrest which captured Mr. Floyd saying, “Everything hurts,” and crying out in ache. Mr. Brodd stated that he had heard these exclamations throughout his overview of the tapes, however that he didn’t “note it.”

• While the 2 knowledgeable witnesses gave testimony that supported Mr. Chauvin, it’s unclear what affect they will have on jurors. Cross-examination from prosecutors was efficient in that it drew some concessions from each witnesses on the stand. And the defense was much less thorough than the prosecution. The prosecution known as several medical specialists to the stand, together with a heart specialist and a pulmonologist, and allowed its consultants to stroll by the arrest second by second, figuring out key factors and breaking down the video tapes in meticulous element. The defense witnesses spoke extra broadly, and appeared much less educated concerning the particulars of the arrest.