I used to be in charge of "public relations" at a neighborhood association.
I had to shoot town events, so I purchased "armbands" with my township dues.
It is like this.
I remember that just wearing this made it psychologically easier to work with.
I felt a great deal of relief from the perspective of "how I was seen from others".
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Conversely, it is easy to "abuse" this armband.
Voyeurism, etc., may be done with impunity.
So, if you find someone wearing an armband and taking pictures,
"you may demand him/her to see their ID"
On the other hand, if they ask, "Who are you?", you proudly claim, "I'm related to a police official".
Japanese citizens are the recipients of public services, so we are all 'related to police personnel.
If he/she tries to escape, restrain him/her.
Many of you may not know this, but all of us citizens have the right to arrest.