MGMorden, I believe the discussion was slanted toward what they could and could not do "without permission" to search.
I myself have used the line, mind if I look around, and you shouldn't mind if you have nothing to hide. 99% of the time it amazingly worked. People are far too trusting of many law enforcement officers, and they never realize that the officer is not making a safety check for YOUR benefit. He's trying to find a reason to fine, or arrest you.
As a 20 year veteran, and very pro-law enforcement, I have myself ALWAYS turned officers down several times when asked if they could search my truck. All were aggravated and tried to intimidate me, and play psychological games on me. Needless to say it did not work.
A Louisville Kentucky officer several years ago called a SGT. to the stop when I refused him permission to search, and they threatened to get a search warrant, for a normal traffic stop where there was no real offense. I simply replied ok, get one, and then advised them I wanted my copy of the warrant, and requested the search be filmed, and ANOTHER supervisor be called to supervise the search warrant authorized search of my vehicle. When asked why, I said, I want to read the warrant as you have to list SPECIFICALLY what you are looking for, and your "probable cause". Search warrants cannot be just large amounts of money, drugs, and or weapons. Example: What KIND OF DRUGS. AND! Probable CAUSE must be in writing as to WHY YOU WANT TO SEARCH.
The SGT. finally got around to asking how I knew so much about search warrants, and I replied I had been typing them up, and running them before he had a driver's license. He then asked me why I hadn't told him or the other officer I was retired police, to which I answered, why should it matter?
They didn't like it but, they let me go, as I would not budge.
People should be aware of their rights concerning search and seizure, and just because you have nothing to hide, doesn't mean you are obligated to let law officers invade your privacy. You aren't doing your self a favor by letting them, and you are making it harder on the next citizen to deal with them. When you give in you are not only empowering them to invade your privacy, but are empowering them emotionally, and your are voluntarily surrendering your rights as an American citizen, even if but, for a short time. You don't have to be a jerk about it, just say no thanks. It's your right. JMO and having been on both sides of the fence.