In Arizona, we don't have any of the limitations for consent to recording that other states do, so I don't have personal experience with it. However, I'm not convinced police need to be notified they're being recorded when they're on the clock "in the performance of their duties" as police have no right to privacy in that case. I can see, according to the spirit of the law listed, that if the police are dealing with another party and you just want to record it, you'd need consent of the party the police are dealing with, though.
Of every one hundred men, ten should not even be here. Eighty are nothing but targets. Nine are real fighters, and we are lucky to have them, for they make the battle. Ah, but the One... One of them is a Warrior... He will bring the others back.
"Wrong door, buddy!"
Let no man's ghost say my training failed him.