Privacy laws of the United States

The privacy laws of the United States deal with several different legal concepts. One is the invasion of privacy, a tort based in common law allowing an aggrieved party to bring a lawsuit against an individual who unlawfully intrudes into his or her private affairs, discloses his or her private information, publicizes him or her in a false light, or appropriates his or her name for personal gain.Public figures have less privacy, and this is an evolving area of law as it relates to the media.

The essence of the law derives from a right to privacy, defined broadly as "the right to be let alone." It usually excludes personal matters or activities which may reasonably be of public interest, like those of celebrities or participants in newsworthy events. Invasion of the right to privacy can be the basis for a lawsuit for damages against the person or entity violating the right. These include the Fourth Amendment right to be free of unwarranted search or seizure, the First Amendment right to free assembly, and the Fourteenth Amendment due process right, recognized by the Supreme Court as protecting a general right to privacy within family, marriage, motherhood, procreation, and child rearing.

The early years in the development of privacy rights began with English common law which protected "only the physical interference of life and property". Its development of tort remedies is "one of the most significant chapters in the history of privacy law". Those rights expanded to include a "recognition of man's spiritual nature, of his feelings and his intellect." Eventually, the scope of those rights broadened even further to include a basic "right to be let alone," and the former definition of "property" would then comprise "every form of possession – intangible, as well as tangible." By the late 19th century, interest in privacy grew as a result of the growth of print media, especially newspapers.

Between 1850 and 1890, U.S. newspaper circulation grew by 1,000 percent—from 100 papers with 800,000 readers to 900 papers with more than 8 million readers. In addition, newspaper journalism became more sensationalistic, and was termed yellow journalism. The growth of industrialism led to rapid advances in technology, including the handheld camera, as opposed to earlier studio cameras, which were much heavier and larger. In 1884, Eastman Kodak company introduced their Kodak Brownie, and it became a mass market camera by 1901, cheap enough for the general public. This allowed people and journalists to take candid snapshots in public places for the first time.

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