A camera of ANY TYPE is a double edged sword! It all depends on "what the viewer wants to see"! No matter how good your training, good intentions, etc are, sometimes things to haywire. Prosecutors and jurors sitting in a chair in an air conditioned Court Room are NOT on the line in the heat of it and can misconstrue events sometimes.

That said, YES - sometimes it can help too! It can also be an intimidation to the Officer who might hesitate and wind up paying a heavy price. Being judged after the fact by someone who is untrained and wasn't there in the heat of the moment is sometimes a matter of luck!