Tina Knowles, Viola Davis, Cher, and more stars have weighed in on the conviction of Derek Chauvin, the former police officer who killed George Floyd in the streets of Minneapolis last May. The disgraced officer, 46, was sentenced to 22.5 years in prison on June 25 after being found guilty on all counts, including second-degree murder, third-degree murder, and second-degree manslaughter, back in April.