Fair enough Daveinjax, I hear you, and hindsight is always 20/20,
As the approaching officer reaches them he puts hands on one and it's on.
About this though I would argue that officer did not want the derelict to get behind him since he was responding to a call for immediate backup for combative persons and they were still outnumbered. Suppose he'd have let that guy go by and got clocked from behind? Or suppose he'd been armed and stuck a shank as he came behind the officer? That perp should have just stopped instead of being combative, I think he had every right to stop him from getting behind him.
