Seems like the guy calls himself a "copchaser" and is used to actuallly chase police officers, annoyingly record their action and make sure to insult them while teaching them a lesson about how to do their job. And he calls all that "standing his ground". I am sure police officers can be jerks or even completely criminals, but this guy really seems to be crossing the line of common sense. Source: the YT channel himse…
As for the insulting part - sure, that's always a shame.
But what's wrong with following bearers of state power and recording their actions? That's precisely in the spirit of the first amendment.