Just to clear up for anyone reading this quoted post, the idea being conveyed is not that the guerrillas couldn't be faked, but that they looked like guerrillas, and no one would say, "Hey, could be men in monkey suits." On the other hand, this video being discussed, and others similar to it, all look like people in monkey suits. This logic seems to fall short with some people.
Well, to some, it looks fake, to others, it doesnt. Popular opinion, regardless of either position, should not affect the authenticity of the film