Continuity mistake: In one shot (the one where the racist waitress slowly puts her hands on her hips), the sausage platter is turned differently than in the rest of the scene. The same mistake pops back later when father and son are confronted by the couple of white knights. (00:18:10)
Continuity mistake: Kai's knife, once he inflicts the deadly stab, bears just a single streak of blood in one shot, and appears soaked in it in the following. And in the overhead shot immediately following him pulling out, the knife is missing from his hand entirely. (00:45:00)