Let’s pretend the cop is a private citizen carrying.
What would the FR reaction be?
Don't bring a flagpole to a gun fight.
Good shoot if a civilian did it. Did the officer have a taser????
Here is how it was handled here in Reno. Keep you eye on the woman in the gray sweater. She has an extendable baton in her hand.
https://www.youtube.com/watch?v=W-BKzrqskXI
My reaction: Assault with a metal pole like that can be deadly. If a citizen is assaulted this way, justified shooting.
What others will say is on their consciences.