A woman cleans Guy Fawkes masks, used by many demonstrators in protests around the world and in the recent wave of demonstrations in Brazil, at a factory assembly line in Sao Goncalo, near Rio de Janeiro, June 28.
Credit Amine Landoulsi / AP
Tunis, Tunisia: A man wears an Anonymous mask during a May Day rally on May 1.
Credit Don Emmert / AFP/Getty Images
New York: A young man with an Anonymous mask marches with Occupy Wall Street protesters on Nov. 11, 2011, at Zuccotti Park in New York.
Alexandria, Egypt: A masked protester poses with a tear gas canister in front of a burning vehicle during clashes between opponents of Egyptian President Mohammed Morsi and his Islamist supporters on Dec. 21, 2012.
Credit Chsitophe Simon / AFP/Getty Images
Rio de Janeiro: Demonstrators wearing Guy Fawkes masks and waving a Brazilian national flag march in downtown Rio on June 17 against higher public transportation fares and the use of public funds to finance international soccer tournaments.