Dennis v. United States, , was a United States Supreme Court

Supreme Court of the United States

The Supreme Court of the United States is the highest court in the United States. It has ultimate appellate jurisdiction over all state and federal courts, and original jurisdiction over a small range of cases...

 case involving Eugene Dennis

Eugene Dennis

Francis Xavier Waldron , best known by the pseudonym Eugene Dennis was an American communist politician and union organizer, best remembered as the long-time leader of the Communist Party USA and as named party in Dennis v...

, general secretary

General secretary

-International intergovernmental organizations:-International nongovernmental organizations:-Sports governing bodies:...

 of the Communist Party USA

Communist Party USA

The Communist Party USA is a Marxist political party in the United States, established in 1919. It has a long, complex history that is closely related to the histories of similar communist parties worldwide and the U.S. labor movement....

, which found that Dennis did not have a right under the First Amendment

First Amendment to the United States Constitution

The First Amendment to the United States Constitution is part of the Bill of Rights. The amendment prohibits the making of any law respecting an establishment of religion, impeding the free exercise of religion, abridging the freedom of speech, infringing on the freedom of the press, interfering...

 to the Constitution of the United States to exercise free speech, publication and assembly, if that exercise was in furtherance of a conspiracy to overthrow the government.
George W. Crockett, Jr., Abraham J. Isserman and Harry Sacher

Harry Sacher

Harry Sacher was a British lawyer and Zionist Leader.Sacher wrote for the Manchester Guardian as a political analyst.An active Zionist, He was elected to the Executive of the WZO, and worked closely with Chaim Weizmann in their efforts to define and lead the WZO during the 20s and 30s, and...

 argued the cause for petitioners

Plaintiff

A plaintiff , also known as a claimant or complainant, is the term used in some jurisdictions for the party who initiates a lawsuit before a court...

.