Minneapolis officials and leaders of a north Minneapolis neighborhood today urged peace and calm following an incident last night that resulted in one wounded boy and assaults on several reporters. What began as a drug raid escalated into a riot when a bullet fired by an officer at a pit bull either ricocheted or dislodged concrete that hit the boy in the forearm. People upset by the injury to the boy yelled at police and hurled rocks and bottles. They also took out their anger on several news reporters and their vehicles by setting one on fire and breaking out windows in others.