John Marshall Harlan II,
Yates v. United States (354 U.S. 298…
(1957)
“ The kind of advocacy and teaching which is charged and upon which your verdict must be reached is not merely a desirability, but a necessity that the Government of the United States be overthrown and destroyed by force and violence, and not merely a propriety, but a duty to overthrow and destroy the Government of the United States by force and violence. ”
