An attorney for Derek Chauvin is planning to ask an appeals court Wednesday to throw out the former Minneapolis police officer’s convictions in the murder of George Floyd, arguing that numerous legal and procedural errors deprived him of a fair trial. Floyd died on May 25, 2020, after Chauvin, who is white, pinned the (b)lack man to the ground with his knee on his neck for 9½ minutes. A bystander video captured Floyd’s fading cries of “I can’t breathe.” Floyd’s death touched off protests around the world and forced a painful national reckoning with police brutality and racism. Hennepin County...