black out

black outと聞くと、「停電」をイメージしますが、「灯火管制、報道管制」など意図的、人為的に真っ暗にすることも意味するのですね。見出しのgo darkとともに覚えておきます。（Sugiuchi）

Wikipedia to go dark Wednesday in protest against SOPA, PIPA
By Yamiche Alcindor, USA TODAY

Joining the protest against two proposed federal Internet regulation bills, Wikipedia's English-language site will be blacked out for all of Wednesday, co-founder Jimmy Wales announced on Twitter today.
Beginning at midnight ET on Jan. 18, visitors will see a protest message for 24 hours, Wales tweeted. The move will affect 30 million to 40 million users, he said, correcting an initial figure of 100 million. "This is going to be wow," read one of his tweets.
http://content.usatoday.com/communities/ondeadline/index

San Francisco -- January 16, 2012 -- On January 18, 2012, 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 U.S. House of Representatives, and PROTECTIP (PIPA) in the U.S. Senate. 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.
Wikipedia administrators confirmed this decision Monday afternoon (PST) in a public statement (http://en.wikipedia.org/wiki/Wikipedia:SOPA_initiative/Action#Summary_and_conclusion):