The United States Constitution
Defamation is the communication of a false statement that harms the reputation of another. When in written form it is often called ‘libel’. Defamation has always acted as a limit on both the freedom of speech as well as the freedom of the press. There is no such thing as a false opinion or idea – however, there can be a false fact, and these are not protected under the First Amendment. When these false facts harm the reputation of others, legal action can be taken against the speaker.