I've got new for you, that was not my point.
I thought your point was that the policeman's actions were OK, because the manager would likely have liked him to get the car to move.
Here's my point. The law should be enforced as equally and as consistently as possible. The absolute worst reason for enforcing the law selectively is to allow the enforcing agent to have greater power in his personal life.
At the age of 42, my life experience is that a police department would either ignore such a call from a store manager, or put it at the very bottom of their priority list, responding long after the problem had gone away of its own accord.
Although I no doubt would have been happy about the officer's intentions (if not his methods) if I was in line behind him, we should be unhappy with a society where we must share the personal interest of the enforcing agent to get a good outcome.
I will admit to being biased by my personal experiences, e.g. police who are disinterested in filing criminal charges or following up on property crimes, police who regularly pass me doing 15 mph over the speed limit in the same strip of road where they regularly set up a speed trap and give tickets for 5 mph over, police who have stood by while I've had to protect children from a raving loon threatening to kill them (and showed no interest in pursuing said loon), and it goes on.
Am I anti-police? I don't think so, I've also stood by on many occasions to assist an officer if they needed it, and I've helped subdue a suspect on one of those.
I just have high expectations of the police and incidents like this tend to highlight their deficiencies to me.