On the surface, yes, but it's more deep than that. Again, they don't trust the PD when they say that the criminal was killed because he was a threat to the life of the police officer. Everyone should want cameras. The law-abiding citizens know that their town will likely be safer, and if this sort of thing happens again, there will be no questions. The protesters should think that Michael Brown would be alive today if Wilson had a camera on him (since they think he was killed unjustly).