Continuity mistake: After Tweed gets shot, his head leans against the front passenger side window. There is only a quick glimpse inside after Vincent gets out of the car and leaves the driver's door open, but Tweed is not visible in the passenger seat. (00:02:50 - 00:03:43)
Continuity mistake: Vincent has a diagonal "V" or wishbone-shaped tattoo (possibly a scar) on the right of his neck when he gets to prison, but it becomes a vertical line of letters (possibly chain links) seconds later. (00:05:39)
Factual error: The warden, sergeant, and a couple of other members of the parole board are seated at a long table, so their upper bodies are in the open. When 10 shots are fired at them at close range, there is no blood splatter and little visible blood. (00:20:47)