Continuity mistake: When Mosely is first transporting Eddie in his car and stops to buy a bottle of alcohol. The first hit is attempted on Eddie but as Mosely exits the store he shoots the hitman from behind. Watch closely as the camera does it's 360 around Mosely. His gun, a Glock, is jammed. It appears to have either a shell stuck in the chamber or it's just a mistake by the props department, they forgot to close it completely. Glocks fire from a closed chamber, then they eject the shell, load another and close the chamber again, in a single movement. It should be closed after he has fired the shot. When the camera comes back to Mosely after a slow look around the street, he is being fired upon by a second hitman. The gun chamber is now closed and ready to fire again.
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.