Wikipedia founder Jimmy Wales says the online encyclopedia will black out its website Wednesday to protest anti-piracy legislation under consideration in the US Congress. Wales announced the move on Twitter Monday. The popular online community-sourced information site will shut down its English versions for 24 hours to protest the controversial Stop Online Piracy Act and the Protect Intellectual Property Act pending in Congress. “Student warning! Do your homework early. Wikipedia protesting bad law on Wednesday!” Wales said on the microblogging site. “'Freedom is never voluntarily given by the oppressor; it must be demanded by the oppressed.' MLK — on Wednesday, Wikipedia demands,” Wales said, citing slain US civil rights leader Martin Luther King. Wikipedia is not the first website to announce plans to shut down but is the most well-known, with an estimated 25 million visitors a day. Reddit, Boing Boing and other sites also have plans to go dark. The Stop Online Piracy Act (SOPA) is currently before the House of Representatives, while the Protect IP Act is the version before the Senate. The draft legislation has won the backing of Hollywood, the music industry, the Business Software Alliance, the National Association of Manufacturers and the US Chamber of Commerce. But last month, the founders of Google, Twitter, Wikipedia, Yahoo! and other Internet giants expressed concern over the two drafts, saying in a open letter that they would “give the US government the power to censor the Web using techniques similar to those used by China, Malaysia and Iran.” “We urge Congress to think hard before changing the regulation that underpins the Internet,” they said. “Let's not deny the next generation of entrepreneurs and founders the same opportunities that we all had.” Wales said Wikipedia would go dark for a full 24 hours in English, saying: “Final details under consideration but consensus seems to be for ‘full' rather than ‘soft' blackout!” “This is going to be wow. I hope Wikipedia will melt phone systems in Washington on Wednesday. Tell everyone you know!” he said. Volunteer-staffed Wikipedia turned 11 years old on Jan. 15 and boasts being the largest encyclopedia in history with more than 20 million articles in 282 languages.