What is Spence v. Washington?

Spence v. Washington, 418 U.S. 405 , was a United States Supreme Court case dealing with non-verbal free speech and its protections under the First Amendment. The Court, in a per curiam decision, ruled that a Washington state law that banned the display of the American flag adorned with additional decorations was unconstitutional as it violated protected speech. The case established the Spence test that has been used by the judicial system to determine when non-verbal speech may be sufficiently expressive for First Amendment protections.