Online encyclopedia Wikipedia will black out its website tomorrow for 24 hours to protest anti- piracy bills under consideration in the US Congress, saying if passed, the "destructive" legislation will "endanger" free speech and impose censorship on international websites.

"In an unprecedented decision, the Wikipedia community has chosen to blackout the English version of Wikipedia for 24 hours, in protest against proposed legislation in the United States the Stop Online Piracy Act (SOPA) in the US House of Representatives, and PROTECTIP (PIPA) in the US Senate," said a statement by Wikimedia Foundation's Head of Communications Jay Walsh.