This spaz cop should get the Barney Fife treatment from his commanding officer: make him ask permission to load one bullet in his gun.
They should release his name, his address, where his wife works (assuming someone was idiot enough to marry this monster), along with information about where his kids go to school.
If the officer actually felt threatened he could have fired his weapon into the ground in front of the dog and it would have turned and gone away. I have done this before when a pit bull was advancing on me and acting very dangerous. One round into the dirt next to him and he suddenly had something to do elsewhere. I have yet to see a dog that didn’t turn and run at the sound of a little .22 rimfire revolver, maybe the crack hurts their ears.