It's impossible for any hunter with any kind of sense to mistake a human for a deer and accidentally shoot that human- or in this case, 2 humans. In order to shoot anything, the target (in this case, a deer) needs to be identified, and then the portion of the target that needs to get the hit needs to be identified (on a deer, usually the area behind the shoulder). Head/neck shots are an option as well, depending on who you ask. None of these targets look remotely like a human. Deer look even less like a human wearing orange, which I think would be very important for people hunting in this manner (I don't do it, but if I did, I would def. be wearing orange, whether the law required it or not). People who hunt deer with dogs here (something else I don't do) generally use shotguns, and put orange on the dogs.