Minneapolis Police Department

Witness Seth Stoughton testified on Monday in the trial of former Minneapolis police Officer Derek Chauvin that the force used against George Floyd was not reasonable. Court TV via AP hide caption

Witness Bill Smock, a Louisville physician in forensic medicine, on Thursday dismissed the idea that fentanyl, which George Floyd was found to have consumed at some point before he died, could be blamed for his death. TV pool via AP hide caption

Breahna Giles, a forensic scientist with the Minnesota Bureau of Criminal Apprehension testified on Wednesday in the murder trial of former police officer Derek Chauvin in the death of George Floyd. AP hide caption

David Ploeger, a retired Minneapolis police sergeant who was Derek Chauvin's shift supervisor, on Thursday told the court that he wasn't informed of the officer's knee on George Floyd's neck until after he was in the hospital, or how long Chauvin had kept Floyd in that position. Court TV via AP hide caption

Minneapolis firefighter Genevieve Hansen testifies Tuesday in the trial of former police officer Derek Chauvin in the May 25, 2020, death of George Floyd. Court TV, Pool photo via AP hide caption

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 said that he couldn't breathe on May 25, 2020 in Minneapolis. AP hide caption

Former Minneapolis police officer Derek Chauvin, who was captured on cellphone video kneeling on George Floyd's neck for several minutes, still faces a higher charge of second-degree murder. Brommerich/AP hide caption

Minneapolis Officer Derek Chauvin is seen struggling to force George Floyd into the back seat of a police SUV in newly released body camera video recorded by Officer Tou Thao. Both Chauvin and Thao were fired, along with two other officers involved in Floyd's death on Memorial Day. All four former officers are facing charges. Hennepin County/MPR/YouTube/Screenshot by NPR hide caption

The four former Minneapolis police officers facing charges in George Floyd's death include Derek Chauvin (from left), J. Alexander Kueng, Thomas Lane and Tou Thao. Hennepin County, Minn., Sheriff's Office via AP hide caption

The killing of George Floyd by police has sparked ongoing protests calling for the city to defund the Minneapolis Police Department. On Friday, the City Council took the first of many steps to make that a reality. Kerem Yucel/AFP via Getty Images hide caption

The reforms in Minneapolis follow the widespread and sometimes violent protests after the police killing of George Floyd. Julio Cortez/AP hide caption

Protesters across the country have been demanding police reform since the death of George Floyd, who died after being restrained by Minneapolis police officers on Memorial Day. John Minchillo/AP hide caption