Revealing: In the beginning, during the riot outbreak, there is a scene with a soldier being pulled down from climbing a fence. In the next shot as the crowd is pushing forward, you can see a concrete road block tip over. If you look closely at the bottom of the block, you can see that it's not a real concrete block, but a prop made of wood planks and grey painted rubber.

Revealing: During the car chase near the end of the movie there is a scene in which a van hits a motorcycle and the van flips end over end. In one of the shots you can see the two air cannons behind the rear axle.

Continuity: In the beginning during the riot, a man with a sign reading "The end is nigh", can be seen shot at. The sign gets several gunshot holes, but as the man falls down the holes are gone.