Continuity: At the end of the Five Points battle, when the defeat of priest Vallon is announced, there are some shots of his shocked followers. In one you see Monk with a pretty clean face, but when the camera closes up on his face it's full of measles-looking blood stains.

Continuity: When Amsterdam is in the Chinese ballroom the first time, he shows an unfolded sheet of paper with a drawing to the man sitting across the table from him. In the next shot, he hands the paper - which is now folded - to the man, who then unfolds it.

Continuity: At the beginning of the riot, some rich men are talking while playing snooker. The balls are placed differently depending on the camera angle.

Revealing: When Bill the Butcher kills Priest Vallon at the Five Points battle, the blood squeezes from Vallon's flank wound in an obviously fake way.

Factual error: In the funeral procession scene, the priest is wearing the maniple on the wrong arm. The maniple is a 2 ft strip of ornate cloth prescribed for use in the Catholic Mass before Vatican II in the early 1960s. It is actually worn of the left forearm; however, in this scene it is on the priest's right.

Revealing: In the battle of The Five Points, there are at least two instances where you see "blood" splattered over the lens.

Continuity: The level in the Butcher's drink changes from shot to shot during the celebration of the defeat of the Dead Rabbits.