Wikipedia is requesting that readers contact members of Congress about the bill during the blackout.
Wikipedia will black out the English language version of its website Wednesday to protest anti-piracy legislation under consideration in Congress, the foundation behind the popular community-based online encyclopedia said in a statement Monday night.
The website will go dark for 24 hours in an unprecedented move that brings added muscle to a growing base of critics of the legislation. Wikipedia is considered one of the Internet’s most popular websites, with millions of visitors daily.
“If passed, this legislation will harm the free and open Internet and bring about new tools for censorship of international websites inside the United States,” the Wikimedia foundation said.
The Stop Online Piracy Act in the U.S. House of Representatives and the Protect Intellectual Property Act under consideration in the Senate are designed to crack down on sales of pirated U.S. products overseas.
Supporters include the film and music industry, which often sees its products sold illegally. They say the legislation is needed to protect intellectual property and jobs.
Critics say the legislation could hurt the technology industry and infringe on free-speech rights. Among their concerns are provisions that would weaken cyber-security for companies and hinder domain access rights.
The most controversial provision is in the House bill, which would have enabled federal authorities to “blacklist” sites that are alleged to distribute pirated content. That would essentially cut off portions of the Internet to all U.S. users. But congressional leaders appear to be backing off this provision.