“Freedom of expression is the matrix, the indispensable condition, of nearly every other form of freedom.”

—U.S. Supreme Court Justice Benjamin N. Cardozo in Palko v. Connecticut

Freedom of speech, the press, association, assembly, and petition: This set of guarantees, protected by the First Amendment, comprises what we refer to as freedom of expression. It is the foundation of a vibrant democracy, and without it, other fundamental rights, like the right to vote, would wither away.

The fight for freedom of speech has been a bedrock of the ACLU’s mission since the organization was founded in 1920, driven by the need to protect the constitutional rights of conscientious objectors and anti-war protesters. The organization’s work quickly spread to combating censorship, securing the right to assembly, and promoting free speech in schools.

Almost a century later, these battles have taken on new forms, but they persist. The ACLU’s Speech, Privacy, and Technology Project continues to champion freedom of expression in its myriad forms — whether through protest, media, online speech, or the arts — in the face of new threats. For example, new avenues for censorship have arisen alongside the wealth of opportunities for speech afforded by the Internet. The threat of mass government surveillance chills the free expression of ordinary citizens, legislators routinely attempt to place new restrictions on online activity, and journalism is criminalized in the name of national security. The ACLU is always on guard to ensure that the First Amendment’s protections remain robust — in times of war or peace, for bloggers or the institutional press, online or off.

Over the years, the ACLU has represented or defended individuals engaged in some truly offensive speech. We have defended the speech rights of communists, Nazis, Ku Klux Klan members, accused terrorists, pornographers, anti-LGBT activists, and flag burners. That’s because the defense of freedom of speech is most necessary when the message is one most people find repulsive. Constitutional rights must apply to even the most unpopular groups if they’re going to be preserved for everyone.

Some examples of our free speech work from recent years include: