Continuity mistake: In the scene where John is talking to Van Buren underneath the bar, John has a large spot on his neck, as well as a scab and red mark on his chin. These aren't present at another point in the film. (01:05:25)
Continuity mistake: In the scene after the bus rolls down (when they are at the beach), one of the girls is wearing a red bikini, but when she gets in the water it's black. (00:13:40)
Continuity mistake: In the shot where Mattie walks towards the toilet at her school, you can see there's a pencil in her hair pointing downwards. When she's inside the toilet, the pencil's direction and her hair have both changed.
Other mistake: When Bruce and Mos Def are running through the alley near the beginning, they run past a Chinese man who slams a dumpster lid shut. Once Bruce pulls out his gun to look back, that same man starts running because he gets scared. In the next shot, he continues running, but soon stops as if he thinks filming is over. This is visible right before the camera pans to the right.