I don't know. Other than cuffing them and one or two of the comments I don't see a lot to criticize. They responded to a citizen complaint. I don't blame them for drawing on the two since they had no idea of their intent. They questioned them, checked things out, determined no crime had been committed, and let them go. They could have gotten a lot worse than that.
They held them for 46 trying to come up with charges. They double and treble checked their status and their firearms trying to come up with something illegal.
The officer went way beyond making sure what they were doing.
So, assuming you’re acting in a completely lawful manner, you would have no objections if a police officer cuffed you and/or drew and pointed his service weapon at you?
Turning off the recording device = “we’re going to do something we know is wrong”.
No other interpretation, LEOs. If you’re not violating rights, you have nothing to fear from a video camera.