The part about calling 911 and saying unidentified men seem to be impersonating police is good, but don’t try to talk to them or reason with them, that will just get you assaulted. They only care about subduing targets (to them you’re a target or a threat, not a human). If they’re already in your face giving you orders, hopefully a witness will make that call for you, and you do it for someone else if you witness it.
The part about calling 911 and saying unidentified men seem to be impersonating police is good, but don’t try to talk to them or reason with them, that will just get you assaulted. They only care about subduing targets (to them you’re a target or a threat, not a human). If they’re already in your face giving you orders, hopefully a witness will make that call for you, and you do it for someone else if you witness it.