Here's a video taken of another "hero" law enforcer who makes up "the law" on the spot!
A guy is filming the publicly visible exterior of a police station from a public sidewalk – which is (for the moment) abundantly legal – when he is approached by two confrontational "heroes" who – of course – demand his ID, Soviet-style.
Not because the man is committing a crime – but because he is challenging the authority of the "heroes." It is time, therefore, for a Dominance Display.
The fact that this sort of thing is has become routine in the United States says a lot about the state of the United States, which is no longer even plausibly a "free" country. It is a country in which lawless law enforcers do as they please – insolently – because they are confident that there will be no meaningful repercussions, no matter what they do.