At 9.25pm on Monday, May 25, George Floyd died in the custody of the Minneapolis police.
That night, a white police officer had handcuffed the black man for allegedly trying to use a fake $20 bill, before holding him down with a knee on his neck for almost nine minutes, as Floyd pleaded that he could not breathe.
Floyd was pronounced dead in hospital a short time later.
The killing was filmed by bystander Darnella Frazier and has since been seen by hundreds of millions of people. The 46-year-old man’s death has triggered protests across America in all 50 states, as the nation responds to the injustice black citizens continue to experience at the hands of authorities.
All four policemen were quickly fired from the Minneapolis Police Department. And in June 2020, it was confirmed that all police officers involved in the death of George Floyd have been charged over his murder.
Here’s what we know about their charges.
Derek Chauvin, who had been with the Minneapolis police department for 19 years, was the man responsible for holding his knee to Floyd's neck, despite the man's desperate pleas that he "can't breathe".
Initially, Chauvin was charged with third-degree murder, which in Minnesota means the suspect acted without regard for human life, but did not intend to kill. He was also charged with second-degree manslaughter.
However, in June, Chauvin was found guilty of second-degree unintentional murder, second-degree manslaughter and third-degree murder.
He was sentenced to 22 and a half years in prison.
Now, the former Minneapolis police officer has appealed his conviction.
A court filing made on Wednesday says he aims to appeal based on 14 major issues made with his case.
Chauvin claims the court in which he was tried "abused its discretion", by denying the convicted killer a change of venue, his motion to have the jury isolated from the media throughout trial and his request for a new trial.