After more than a week of nationwide protests, all four Minneapolis police officers involved in the killing of George Floyd have been charged with murder or aiding and abetting murder in a case that triggered historic protests across the country. “If you look at the video … the pressure from all three officers on Mr. Floyd’s body contributed to his death,” says activist and civil rights attorney Nekima Levy Armstrong, former president of the Minneapolis chapter of the NAACP. “They heard the man pleading, saying ‘I can’t breathe,’ and they had a callous disregard for his life.”