It's definitely an interesting view on the topic. It's funny that law enforcement use this all the time, why would you deny a search if you have nothing to hide, right?
I bet they'd be pretty mad if you asked them to search their homes or cars, because they shouldn't have anything to hide either. They are supposed to be the most upstanding/law-abiding citizens around.
Or how about a quick full-body cavity search... people don't generally understand what they are giving up until it's gone!