I think it's a good thing to check up on incomplete 911 calls but there is a huge difference between butt dialing and the dispatcher hearing your conversation about the Colts game then hearing a scream, commotion, etc. In the case of the butt dialer talking about the Colts game, I'm still not against the officers doing a follow up but they should obviously practice discretion. Knock on the door and ask if everything is ok and explain the call. Tell them not to butt dial 911 next time you big dummy.
In the case of the blood curdling scream, that is a no brainer as there is definite probable cause.
But I think contraband found in the case of an incomplete 911 call should not be admissable in court. Someone brought up the point that an officer probably isn't going to ignore a bag of dope. Any officer with a badge knows that anything seized without a warrant is inadmissable in court. If the courts were to determine that contraband found during a specific incomplete 911 call were inadmissable, there would be no need for the officer to file a charge.
Pulling a guy over for a burnt out light and finding other crimes in the process is one thing. What I'm talking about is a "bored" officer seeing a car he wants to stop and then "finds" a reason to pull them over. In that case, the "probable cause" of the tail light was merely a ruse to make the stop. I believe that is a clear abuse of the spirit of the 4th amendment. Some time ago, a member here said they were pulled over for a burnt out license plate light. At the end of the stop, the officer told him it wasn't burnt out but was pretty dim. To me, that is pure abuse of the law.
Buddy, you are way out of your league with your legal opinions about what is admissible evidence and what is not. As for your references to traffic violations; driving is not a right, it is a privilege. When you are driving a defective vehicle, you run the risk of having an officer pull you over to enforce the traffic laws. You also are assuming a lot in your "bored officer" scenario.
It is interesting that officers can't win no matter what they do. If they are seen eating in public, they are lazy slugs. If they are pro-active, checking out their beat by making traffic stops, they are out violating folks rights. If they stop a car for minor equipment violations and don't write a ticket, then they must be on a "fishing" expedition. If they make the same stop and write a ticket, they are either trying to gain revenue for the government or they are overbearing and throwing their weight around.
Cops are people. For the most part, they are better than the average run-of-the-mill citizens. The never ending weeding-out process gets rid of most of the chaff. No offense is directed to you. You are entitled to your opinions, but maybe if you based your opinions on something, I would put more stock in them. You just might want to consider signing up for a citizen's police academy.