The Knock Out Cop

Audio problem: Rizzo gets interrupted in his 'conversation' with Tom; he shoves away the guy with the horseshoe moustache, sending him offscreen. A noise of broken glasses and cracked wood is added, but in the following part of the scene the club is undisturbed, with a couple nearby and every table intact. It's only a minute later when the big guy comes back with a vengeance, that stuff starts breaking and people acknowledge violence happening nearby. (00:36:40)

Sammo

Revealing mistake: At the beginning of the movie, the coked-up sailor is shooting from a rooftop and screaming various racial slurs. Despite that, there's a big crowd building. When he shouts "Come and get me, honkies!" you can see people running way before he pulls out of the gun again and shoots. Not only that; some of the extras are just enjoying themselves and not keeping a straight face, far from being scared. (00:01:00)

Sammo

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