Knowledge, will forever govern ignorance, and a people who mean to be their own governors, must arm themselves with the power knowledge gives. The First Amendment protects the right of every person to participate in the marketplace of ideas. Louis D. Brandeis, later a justice of the U.S. Supreme Court, wrote an influence article on privacy in 1890 together with Samuel D. Warren. Privacy is what makes life civilized. I don't know what it is, but I know it when I see it.
Privacy is what the government says it is.
Citizens have a right to solitude but not a right to secrecy. Professor Prosser defined four kinds of privacy. Breach of informational confidentiality in situations where one has a duty to maintain the confidentiality b. Unreasonable intrusion into an area wherein one has a reasonable expectation of being undisturbed. Unreasonable publicity given to private information that the public has no legitimate interest in knowing.