A Missouri looter was convicted of murder Wednesday for killing a former St. Louis police captain during a 2020 night of violence in the aftermath of the George Floyd police murder. A jury found Stephan Cannon guilty of killing David Dorn while the retired captain investigated a break-in at his friend’s pawn shop on June 2, 2020. Cannon, 26, fired 10 shots at Dorn, 77, after the ex-cop approached the pawn shop and shot his gun in the air to deter looters, prosecutors said. Cannon was convicted of first-degree murder, meaning the jury concluded he had premeditated the killing. He...