Continuity mistake: Toward The End of the episode when the older mobster is walking from his car down a narrow alleyway toward home, he passes under a low hanging outdoor light fixture. When he is accosted by the other mobster with a gun they are standing with the light fixture between them. There is no movement, but when the police arrive, the light fixture is well behind the guy with the gun.
Continuity mistake: Jenko and Witten confront a guy creating a commotion in a market. The felon runs past them out to the sidewalk where, somehow, the two cops are waiting and grab him.
Continuity mistake: During the family meal, Jaime takes a bite of food, then immediately in the next shot, both arms are down, and he is talking and not chewing.
Continuity mistake: Jamie runs to a car which has crashed and has a light pole across its roof. The light pole disappears in the closeups as Jamie struggles to free the driver.

Continuity mistake: While Danny and Waylon Gates are with Rodriguez at the safe house, showing him the photograph of his daughters, during this scene there is no picture hanging on the wall beside the door, but as they lead Rodriguez out in the last shot of the scene, a picture suddenly appears on that wall. (00:37:30 - 00:39:20)

Continuity mistake: When Danny and Baez confront Carmine to clear a few things up, Carmine tells them to call his lawyer. Just as Carmine clicks his key fob and his car explodes, Carmine's coat is entirely unbuttoned, but when he's blown backwards and slams onto the ground, in the first overhead shot of Carmine lying on the ground, his coat is buttoned up. (00:24:20)






Answer: It is the lapel pin worn by members of the NYPD Honor Legion.
The lapel pin is on Danny but not Biaz, why? Also, Baker, Sid, Frank &Garrett wear one. Significance? Are they all the same?
Is the P.C.'s pin different than a legion pin? What are the symbols and their meaning?
I think it may be Masonic?
But why would the mayor wear one?