I know as a libertarians, you're desparately trying to find a way to paint this as some egregious violation of civil rights. However, I believe even your fellow libertarians Socretease, who is a lawyer, said this wasn't entrapment.
Did the cops patrol the bathrooms, and maybe even went on a stake out occassionally? Sounds like it. I don't do their job, and I don't know how they operate.
I do know that public nuisances and lewd behavior in airport bathrooms, is most certainly a responsibility of the Airport Police Department. Several people tried to spin this like these cops should have been out in the city tracking the mob, and rapists. These are Airport Cops - the airport is their job. No one was pulled off a case against the mob, to stake out this bathroom.