Thousands of websites went black or obscured their homepages on Wednesday to protest the Stop Online Piracy Act (SOPA) and the Protect IP Act (PIPA), two controversial bills designed to crack down on web piracy. Critics of the bills — which are backed by Hollywood, the recording industry, and major media companies, including Time Warner, the parent of TIME — say they are too broad and could lead to Internet censorship.
Here are ten of the most prominent websites participating in Wednesday’s protest.
(More: SOPA Protests Gain Steam as Web Activists Flex Growing Clout)
Last month, Google co-founder Sergey Brin said he was “shocked that our lawmakers would contemplate such measures that would put us on a par with the most oppressive nations in the world.”