Participants in a flashmob wearing costumes, including a Guy Fawkes mask (C), stand around as flashmobbers get ready to dance the Harlem Shake in front of the Berlin cathedral February 20, 2013. The flashmob was called in an effort to gather as many people as possible and perform the Harlem Shake in sub-zero temperatures. AFP PHOTO / JOHN MACDOUGALL
Pro-democracy protesters wear Guy Fawkes mask as they march on a street near Hong Kong Government Complex in Admiralty district on November 5, 2014 in Hong Kong. Pro-democracy protesters staged a rally on Guy Fawkes day.