The Bill of Rights

Federalists who wrote the Constitution originally resisted adding a Bill of Rights. Alexander Hamilton argued that listing specific protected rights was risky: government only has the powers the Constitution grants it, so naming a right to free speech might imply government could regulate anything not listed. Anti-Federalists won the argument anyway, demanding explicit limits before they would ratify. The result, added in 1791, is ten amendments, each one holding back a particular government power: no established religion, no speech restriction, no unreasonable searches, no self-incrimination, no cruel punishment, and so on through the structure of criminal trials, down to the Tenth Amendment reserving unlisted powers to the states.

Civil liberties and civil rights sound like synonyms but do different jobs. A civil liberty is a shield from government: the First Amendment stops government from censoring your speech. A civil right is a sword government wields on your behalf, requiring equal treatment and barring discrimination, as in the Fourteenth Amendment's guarantee of equal protection. The Bill of Rights is almost entirely a liberties document, written to restrain, not to guarantee equal treatment.

Two things keep this list from being a closed, frozen set. The Ninth Amendment says naming some rights doesn't deny the existence of others retained by the people, so unlisted rights, like interstate travel, still count. And because the text is short and old, courts reinterpret its phrases, like 'unreasonable search,' as technology and society change, which is how the same 1791 words end up covering a 2024 cell phone.