There's no expectation of privacy in public areas. That's been the law of the land now for a long time.

>The right of the people to be secure in their persons, houses, papers, and effects,[a] against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.

Also:

>No person shall ... be deprived of life, liberty, or property, without due process of law.

Have been the law for a long time too and yet…