Struggles to coerce uniformity of sentiment in support of some end thought essential to their time and country have been waged by many good as well as by evil men. Nationalism is a relatively recent phenomenon but at other times and places the ends have been racial or territorial security, support of a dynasty or regime, and particular plans for saving souls. As first and moderate methods to attain unity have failed, those bent on its accomplishment must resort to an ever-increasing severity. . . . Those who begin coercive elimination of dissent soon find themselves exterminating dissenters. Compulsory unification of opinion achieves only the unanimity of the graveyard.It seems trite but necessary to say that the First Amendment to our Constitution was designed to avoid these ends by avoiding these beginnings. There is no mysticism in the American concept of the State or of the nature or origin of its authority. We set up government by consent of the governed, and the Bill of Rights denies those in power any legal opportunity to coerce that consent. Authority here is to be controlled by public opinion, not public opinion by authority.If there is any fixed star in our constitutional constellation, it is that no official, high or petty, can prescribe what shall be orthodox in politics, nationalism, religion, or other matters of opinion or force citizens to confess by word or act their faith therein.

~ Robert H. Jackson

From time to time our national history has been marred by forgetfulness of the Jeffersonian principle that restraint is at the heart of liberty. In 1789 the Federalists adopted Alien and Sedition Acts in a shabby political effort to isolate the Republic from the world and to punish political criticism as seditious libel. In 1865 the Radical Republicans sought to snare private conscience in a web of oaths and affirmations of loyalty. Spokesmen for the South did service for the Nation in resisting the petty tyranny of distrustful vengeance. In the 1920's the Attorney General of the United States degraded his office by hunting political radicals as if they were Salem witches. The Nation's only gain from his efforts were the classic dissents of Holmes and Brandeis.In our own times, the old blunt instruments have again been put to work. The States have followed in the footsteps of the Federalists and have put Alien and Sedition Acts upon their statute books. An epidemic of loyalty oaths has spread across the Nation until no town or village seems to feel secure until its servants have purged themselves of all suspicion of non-conformity by swearing to their political cleanliness.Those who love the twilight speak as if public education must be training in conformity, and government support of science be public aid of caution.We have also seen a sharpening and refinement of abusive power. The legislative investigation, designed and often exercised for the achievement of high ends, has too frequently been used by the Nation and the States as a means for effecting the disgrace and degradation of private persons. Unscrupulous demagogues have used the power to investigate as tyrants of an earlier day used the bill of attainder.The architects of fear have converted a wholesome law against conspiracy into an instrument for making association a crime. Pretending to fear government they have asked government to outlaw private protest. They glorify togetherness when it is theirs, and call it conspiracy when it is that of others.In listing these abuses I do not mean to condemn our central effort to protect the Nation's security. The dangers that surround us have been very great, and many of our measures of vigilance have ample justification. Yet there are few among us who do not share a portion of the blame for not recognizing soon enough the dark tendency towards excess of caution.

~ John F. Kennedy

Once the government can demand of a publisher the names of the purchasers of his publications, the free press as we know it disappears. Then the spectre of a government agent will look over the shoulder of everyone who reads. The purchase of a book or pamphlet today may result in a subpoena tomorrow. Fear of criticism goes with every person into the bookstall. The subtle, imponderable pressures of the orthodox lay hold. Some will fear to read what is unpopular, what the powers-that-be dislike. When the light of publicity may reach any student, any teacher, inquiry will be discouraged. The books and pamphlets that are critical of the administration, that preach an unpopular policy in domestic or foreign affairs, that are in disrepute in the orthodox school of thought will be suspect and subject to investigation. The press and its readers will pay a heavy price in harassment. But that will be minor in comparison with the menace of the shadow which government will cast over literature that does not follow the dominant party line. If the lady from Toledo can be required to disclose what she read yesterday and what she will read tomorrow, fear will take the place of freedom in the libraries, book stores, and homes of the land. Through the harassment of hearings, investigations, reports, and subpoenas government will hold a club over speech and over the p

~ William O. Douglas

[T]here is both an intrinsic and instrumental value to privacy. Intrinsically, privacy is precious to the extent that it is a component of a liberty. Part of citizenship in a free society is the expectation that one's personal affairs and physical person are inviolable so long as one remains within the law. A robust concept of freedom includes the freedom from constant and intrusive government surveillance of one's life. From this perspective, Fourth Amendment violations are objectionable for the simple fact that the government is doing something it has no licence to do–that is, invading the privacy of a law-abiding citizen by monitoring her daily activities and laying hands on her person without any evidence of wrongdoing.Privacy is also instrumental in nature. This aspect of the right highlights the pernicious effects, rather than the inherent illegitimacy, of intrusive, suspicionless surveillance. For example, encroachments on individual privacy undermine democratic institutions by chilling free speech. When citizens–especially those espousing unpopular viewpoints–are aware that the intimate details of their personal lives are pervasively monitored by government, or even that they could be singled out for discriminatory treatment by government officials as a result of their First Amendment expressive activities, they are less likely to freely express their dissident views.

~ John W. Whitehead