If the guy had been involved in numerous incidents in the neighbourhood before, then this army bloke has simply had enough of his bullshit and is ordering him to fuck off from the neighbourhood like any other fed-up resident would do in the same situation - however, of course, there's no apparent evidence of those incidents.
I think people are just going to film each other 24/7 going forward, we're entering this bizarre world of micro-managed surveillance where all citizens are so distrustful of each other (and of being framed as being in the wrong) that every single human interaction will take place with cellphones on record, just in case someone utters a 'micro-aggression' or similar.
We're entering Bizarroland. Orwellian chaos, where the people literally police themselves using cellphones.