This should have removed him from the force...
"In 2005, Tshamba was driving under the influence of alcohol when he got into a confrontation with a group of young men in a sport utility vehicle who he said shouted racial epithets at him. Tshamba followed the car into a residential neighborhood, where the other driver turned his vehicle and rammed the officer. Tshamba chased the men into a wooded area, firing his weapon. A juvenile was hit in the foot."
Based on what I read in that report...he is a murderer.