I used to work for an episodic law enforcement show. (Im sure the theme song is in your head) You would be surprised how many of those fools, not only sign releases, but when we were called as witnesses, we were told that what was shot, was not actually what was seen. This show that I worked on has been around for a bizzilion years, but trust me, what is seen on tv, isnt necc, what was shot on location (it has been edited to what the City Atty and Cheif of Police want seen)I know of quite a few drug convictions thrown out for tampering with evidence.
Are you saying that the 'reality' cop shows have some scenes that are staged?