So many of these "reality" shows are a fraud. Think about it....if you were going to lie in wait to shoot someone, would you invite a tv camera along? And how convenient that there is camera following the shooter and another camera following the intended target. Some of it is entertaining but surely not "reality". Ever watch "Devils Ride"? Supposedly about two outlaw motorcyle clubs on the brink of war. Sure, allow a camera to follow you to a rival club's "secret" hideout (a trailer in the desert) and let it film you blowing it up with explosives. Right. This stuff is so scripted it's ludicrous that they try to pass it off as reality.
Some shows like the ones depicting survival techniques in wild remote locations are pretty good. At least they teach something and they do fess up that some of the scenes are recreations based on actual situations.
But for me the shows that are real are the best. I like Deadliest Catch. Pretty hard to fake that stuff.