Odd,that is precisely the excuse used by many police when they shoot dogs in the dogs’ own home or yard,kids with toy guns,men reaching for a wallet,pulling up their pants,answering the door,etc.
Police should be easily identifiable as such when making an arrest.
I want to know YOUR reaction when suddenly confronted by several strange persons in dark clothing.
Given there's a woman and a child in the car, the answer is NOT "Find a remote corner of a parking lot and start a gunfight.".
The dead perp knew it was the police and why they were onto him. He probably had the baby in the car to use as a human shield. Fortunately, he never had the chance. So long, sucka!