Guy Fawkes Night, also known as Guy Fawkes Day is an annual commemoration observed on 5 November, primarily in Great Britain. Its history begins with the events of 5 November 1605, when Guy Fawkes, a member of the Gunpowder Plot, was arrested while guarding explosives the plotters had placed beneath the House of Lords. Settlers exported Guy Fawkes Night to overseas colonies, including some in North America, where it was known as Pope Day. Those festivities died out with the onset of the American Revolution. -- After appearing in Internet forums, the mask became a well-known symbol for the online hacktivist group Anonymous, used in Project Chanology, the Occupy movement, and other anti-government and anti-establishment protests around the world.