Whatever theoretical merit there may be to the argument that there is a "right" to rebellion against dictatorial governments is without force where the existing structure of the government provides for peaceful and orderly change. There is no debate that it is within the power of the Congress to protect the Government of the United States from armed rebellion if these mechanisms exist. No one should believe that it is not within the power of Congress to prohibit acts intended to overthrow the Government by force and violence as long as these institutions exist.
Paraphrase of Dennis v. United States, 341 U.S. 494 (1951)
