Corrected entry: When Monk's funeral procession is going down the street, the dog on Bill's porch appears to be a Doberman. The Doberman did not exist until the 1890s. Any importation from Germany to the US was not until the early 1900s. (02:11:30)
Corrected entry: In the scene of Bill the Butcher lying in bed with the naked women, one woman has a noticeable tan line from a bikini - a bit early for the bikini... (01:21:50)
Corrected entry: When the four scapegoats are hanged you see two shots of people watching them fall, following them with their eyes on their way down: first the wife of one of the condemned scapegoats, then Bill's followers. The funny thing is that in the second group, only Amsterdam seems to look at the executed, while McGloin and the others keep staring into empty space where the hanged had been before they fell. (00:58:55)NancyFelix
Corrected entry: In the movie, Amsterdam says that the New York City Draft Riots lasted for four days. It really lasted only three days.
Corrected entry: Late in the film when Bill is standing outside the barber shop staring down Monk, the Irish man running for Sheriff, Monk holds his club in his right hand with the leather strap around his fist. A quick cut to Bill's straight face, and then they show Monk holding the club in his left hand with no strap visible. (02:08:30)
Corrected entry: Near the end, when they are reading off the telegraph messages, one message reports an ironclad lying off the city, ready to act. But the ship we see firing into the city is a wooden ship, not an ironclad. (02:23:25)
Corrected entry: Every time you see a person or soldier holding a rifle or pistol, you'll notice that the weapon has no primer cap under the hammer (which means there is nothing to create a spark to ignite the powder) and (especially with the rifles) quite frequently has no ram rods (without which they cannot reload.)
Corrected entry: At the beginning, when the two gangs meet for a fight, there is snow on the ground - indicating that it is winter. But there is no condensation vapour coming from the actors as they speak.
Corrected entry: In the first big fight scene (when Amsterdam was a young boy), the conflict is shown in great detail. Viewers can see the deaths of hundreds of people, most of them occurring in the center of the brawl. However, when the camera pans out at the end of the scene, there are only a few bodies scattered around, and the majority of them are on the edges of where the fight occured. (00:14:05)