Visible crew/equipment: When Toxie walks into the video store and discovers that a gang is destroying it he grabs one of the gang members and punches him in the stomach. If you look at the guy's belly just before Toxie punches him you'll be able to see a big red spot on his shirt. This big red spot is actually the blood pack that the guy is wearing underneath his shirt and also where Toxie is supposed to hit him.
Continuity mistake: After Toxie has punched the first guy in the video store, he presses his hand against the wound. When he does this the guy's suspenders are down, but in the next shot the guy's suspenders are back up.