what is not a protected form of speech
United States free speech exceptions The Supreme Court has held that "advocacy of the use of force" is unprotected when it is "directed to inciting or producing imminent lawless action" and is "likely to incite or produce such action".[1][2] In Brandenburg v. Ohio (1969), the Supreme Court unanimously reversed the conviction of a Ku Klux Klan group for "advocating ... violence ... as a means of accomplishing political reform" because their statements at a rally did not express an immediate, or imminent intent to do violence.[3] This rule amended a previous decision of the Court, in Schenck v. United States (1919), which simply decided that a "clear and present danger" could justify a congressional rule limiting speech. The primary distinction is that the latter test does not criminalize "mere advocacy".[4]
First Amendment to the United States Constitution Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.[1]