
The right to privacy is fundamental to our understanding of freedom, but the US Constitution does not explicitly mention it. In Griswold v. Connecticut (1965), Justice William O. Douglas placed a right to privacy in a penumbra cast by the First, Third, Fourth, Fifth, and Ninth Amendments. The Fourteenth Amendment has also been used to extend the right to privacy to individuals and same-sex couples. The First Amendment provides the freedom to choose any religious belief and keep it private, while the Third Amendment protects the zone of privacy in the home. The Fourth Amendment protects the right to privacy against unreasonable searches and seizures, and the Fifth Amendment provides for the right against self-incrimination, justifying the protection of private information.
| Characteristics | Values |
|---|---|
| Amendment Number | The Fourth Amendment |
| Right Protected | The right to privacy, specifically protection against unreasonable searches and seizures |
| Date Ratified | December 15, 1791 |
| Key Phrase | "The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated..." |
| Application | Applies to the federal government and has been incorporated to apply to state and local governments through the Fourteenth Amendment |
| Supreme Court Interpretations | The amendment has been interpreted to include a right to privacy in electronic communications and a right against warrantless searches of electronic devices |
| Privacy Expectations | The amendment sets the expectation that individuals have a right to privacy in their persons, homes, and personal effects, and that searches and seizures by the government must be reasonable and based on probable cause |
| Limitations | The amendment does not provide an absolute right to privacy, and there are exceptions to the warrant requirement, such as in exigent circumstances or with consent |
| Impact | The Fourth Amendment has shaped privacy laws and policies in the US and influenced the development of privacy rights and protections |
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What You'll Learn

The First Amendment
While privacy is not explicitly mentioned in the US Constitution, the First Amendment has been interpreted to protect privacy in certain situations.
In Gilbert v. Minnesota (1920), Justice Louis D. Brandeis stated in his dissent that the First Amendment protected the privacy of the home. This case set a precedent for interpreting the First Amendment as protecting an individual's right to seclusion and freedom from public interference, particularly in the context of press intrusion.
In Federal Communications Commission v. Pacifica Foundation (1978), the Court upheld a Federal Communications Commission ban on indecent speech on the radio, as radio broadcasts invade the privacy of the home and are accessible to children.
In addition to the First Amendment, other amendments have been cited in privacy cases. In Griswold v. Connecticut (1965), Justice William O. Douglas placed a right to privacy in a "penumbra" cast by the First, Third, Fourth, Fifth, and Ninth Amendments. This zone of privacy was used to protect a married couple's right to purchase contraceptives.
In subsequent cases, such as Eisenstadt v. Baird (1971) and Lawrence v. Texas (2003), the Supreme Court relied on the Fourteenth Amendment to extend the right to privacy to unmarried couples and same-sex couples, respectively.
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The Third Amendment
> No Soldier shall, in time of peace be quartered in any house, without the consent of the Owner, nor in time of war, but in a manner to be prescribed by law.
The amendment prohibits the quartering of troops in private homes, a response to the Quartering Acts enacted by the British Parliament in 1765. These acts required the Thirteen Colonies to provide food and lodging for British troops, even if it meant imposing on colonial residents.
Despite its infrequent invocation in legal decisions, the Third Amendment underscores the importance of privacy and the sanctity of one's home, contributing to the broader framework of constitutional protections.
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The Fourth Amendment
> "The right of the people to be secure in their persons, houses, papers, and effects, 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."
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The Fifth Amendment
While the US Constitution does not explicitly mention privacy, the Fifth Amendment is one of several amendments that have been interpreted to protect an individual's right to privacy. The Fifth Amendment protects the right to private property in two ways. Firstly, it states that a person may not be deprived of property by the government without "due process of law", or fair procedures. Secondly, it places limits on the government's exercise of eminent domain, requiring that any seizure of private property for public use be accompanied by "just compensation" at market value.
In Griswold v. Connecticut (1965), Justice William O. Douglas placed a right to privacy in a "penumbra" cast by the First, Third, Fourth, Fifth, and Ninth Amendments. The Supreme Court found that when these amendments' protections are taken together, the Constitution creates a "zone of privacy".
In the context of privacy, the Fourth Amendment also protects Americans from "unreasonable searches and seizures" by the government. The interpretation of "unreasonable" has varied over time, and while some searches require warrants, others do not. Generally, the Fourth Amendment protects a person and their property from government searches where there is a "reasonable expectation of privacy".
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The Fourteenth Amendment
While there is no explicit mention of privacy in the US Constitution, the Fourteenth Amendment has been used to uphold a right to privacy in several landmark cases. The Fourteenth Amendment addresses many aspects of citizenship and the rights of citizens, including the commonly cited phrase "equal protection of the laws".
In Roe v. Wade (1973), the Supreme Court held that the Fourteenth Amendment's Due Process Clause protects the right to privacy, including a woman's right to terminate her pregnancy. The Court reaffirmed this in Planned Parenthood v. Casey, stating that the "fundamental right of privacy protects citizens against governmental intrusion in such intimate family matters".
In Eisenstadt v. Baird (1971), the Supreme Court extended the right to privacy to unmarried couples purchasing contraceptives, basing this on the Fourteenth Amendment's guarantee of due process. Similarly, in Lawrence v. Texas (2003), the Court used the Fourteenth Amendment to extend privacy rights to "persons of the same sex [who choose to] engage in... sexual conduct".
However, in Dobbs v. Jackson Women's Health Organization, the Supreme Court overturned Roe v. Wade, rejecting the notion that abortion is protected under the Fourteenth Amendment's Due Process Clause. This decision has raised concerns about the potential impact on other landmark rulings based on similar concepts of liberty and equal protection.
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Frequently asked questions
No, the US Constitution does not explicitly mention a right to privacy.
The Fourth Amendment relates to privacy. It protects the right of privacy against unreasonable searches and seizures.
Yes, several other amendments imply privacy rights. The First Amendment provides the freedom to choose any religious belief and to keep that choice private. The Third Amendment protects the zone of privacy in the home. The Fifth Amendment provides for the right against self-incrimination, which justifies the protection of private information. The Ninth Amendment protects fundamental rights to privacy in ways not provided for in the first eight amendments. The Fourteenth Amendment prohibits states from making laws that violate personal autonomy protections provided for in the first 13 Amendments.
Critics of the War on Terror's mass surveillance programs argue that they are too invasive to be justified by the Fourth Amendment. They argue that the data retrieved is often irrelevant to a court trial, illegally obtained, or invades someone's personal affairs.























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