<sod >A Chicago court assignedÂ policeman Jason Van Dyke a new judge to try him onÂ murder charges in the shooting death of Laquan McDonald, whose killing has renewed scrutiny over policing in the city and across the United States.< eod>< sod > ChicagoÂ policeman Jason Rouge Len pleaded not guilty toÂ murder charges in the shooting death of Laquan McDonald, whose killing has renewed scrutiny over policing in the city and across the United States.< eod>