It says "POLICE" on their uniforms

No, a badge that says "police" is not a police badge.

Police badges have the name of the police department, and the badge number. These are clearly toys.

And if you were to say "this is reasonably interpreted as police" then you have federal agents committing a felony - pretending to be police officers.

Like this?

https://www.amazon.com/dp/B085485BKV

That's sufficient for you?

It's always possible to impersonate police, I'm not sure what your point is?

Wearing what the officers in the video are wearing - uniform with a prominent POLICE label - is sufficient to be identifying yourself as police, and would be impersonating a police officer if a member of the public did it.

If they don't have police powers, then yes.