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media captionWatch: How the prosecution made its case against Derek Chauvin
The death of George Floyd, a 48-year-old black man, while he was being restrained by a white police officer, Derek Chauvin, during an arrest in Minneapolis in May 2020, shocked the world and sparked global protests about racism and police brutality.
Mr Chauvin's three-week trial, on charges of murder and manslaughter, has heard from 45 witnesses and seen hours of video footage filmed by bystanders.
As prosecutors and defence lawyers begin their closing arguments, we look back at five key highlights of the trial:
1. Impact of arrest on witnesses