Pictures can be deceiving. He may have mental problems and was using the flag pole to prod. I don’t see any other reason a policeman would pull a flag from anyone. I just can’t buy into this one 100%.
It went through my mind that the Police may have felt threatened by the “staff” for some reason.
Maybe I have to “learn” not to give them the benefit of the doubt. But they have earned it for a long time and it will be hard to accept a change in attitude...