I advise all who would like to second guess police and to really see what a cop does is to tune in to a show on the A&E network on Friday and Saturday nights between 9 pm & midnight eastern time. It is called Live PD. They also have reruns of previous shows called Live PD Rewind. You will experience all the baloney officers have to endure; two beers, it's not mine, these pants aren't mine, no drivers license, marital conflicts, etc.
The one episode that prompted this post was about 6 weeks ago and IIRC in NYE County, NV when the officer was dispatched IIRC to an unruly person with a gun. The officer involved showed great tactics and eventually resolved that it was a cell phone the actor was showing. Only great tactics by the officer prevented the actor from being shot.