I will differ judgement as we only have a small portion of all information but my gut is this guy needed killing.
Not sure about the "needed" part, but perhaps he did find himself in the same position that some guys who drive too fast or too recklessly when they end up wrapped around a tree.
It didn't seem like he presented an immediate threat to anyone at the time he was shot, and maybe what he really did was to push those Officers past their point of patience.