Former Officer Derek Chauvin was justified in pinning George Floyd to the ground because of his frantic resistance, a use-of-force expert testified for the defense Tuesday, contradicting a parade of authorities from both inside and outside the Minneapolis Police Department. Taking the stand at Chauvin’s murder trial, Barry Brodd, a former Santa Rosa, California, police officer, said officers don’t have to wait for something bad to happen; they need only to have a reasonable fear that there’s a threat and then adjust their actions accordingly. “It’s easy to sit and judge … an officer’s conduct. It’s more of a challenge...