It's not the posters video, the poster is only linking to it.
It is true that things could have been done quicker if they just gave their ids. But that's not the law. The ACLU, with legal precedent and the US Constitution to back them up, have proven that if there is no clear offense that can be stated, the police do not have ultimate authority that the citizens are mandated to follow. [See the rules of being stopped:
http://www.nyclu.org/node/3249]
I didn't like that the person doing the video seemed to lose their cool, even though I have been stopped, had my car searched for a long time, and then been [of course] let go with no summons or even apology. So I understand that can push ones patience. But as an activist, it's also important to be trained to comport ones self in a way where their behavior doesn't become a thinly veiled reason to be further probed and/or to lose public support for your action. Also, as a kid in the 60's and 70's, I would be stopped under "suspicion" because I fit the description of someone who was "sneaking around the neighborhood" or "...there was a recent break-in and you were close to the description. For the record, I grew up on the New Jersey shore that had a small community of color, AND I was a punk rocker with a mohawk and dressed in ways that no one else there did, of whatever ethnicity. Whenever I asked what the description was, there was always some nebulous explanation to stall, and when it was clear I wasn't wanted for anything, nor did their illegal search and detainment of me result in anything, I was just let go...again...without so much as an apology. All that to say, 40 years later as a person iin my 50's, I have no tolerance for vague stops by police. And even less tolerance when it is almost clear there was no legal precedent to support the manner of the stop, though the stop itself wasn't illegal.
To be clear, I've had a number of conversations with police in Brooklyn, NY, [nothing legal, just their interest in the drone], and I was the one to tell them about the laws and registration process. This means people have to be prepared as pilots to present all info and regulations. I have a printout packet with all the info possible. If they had one of those, which also include the legal statutes as mine does, they could have dealt with that simply by reading the officers the law they are duty bound, as well as paid by our tax dollars] to follow. That would have forced the police to be clear about telling them exactly what law broken, what the consequences of breaking that law are, and exact proof they have broken it.
I certainly understand that if they were buzzing the farm, that might be enough to generate an honest police response and inquiry. And, if there had been a proper stop, that would have been the information sought from the complainant so that way at least 20 mins into the stop they could have been told what they did wrong and the like. But, when these businesses have the officials on their side, for whatever reason, the "law" becomes an even more amorphous tool corporations use against the average citizen to keep us compliant. Drones are going to be used on all sides of issues like this around the country. We as pilots need to be on top of our game to make sure we abide by all laws, so we don't have laws put in place to stop us from flying, outside of formal places we have to pay to fly at, all together.