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Tumblr blocked in China before Tiananmen Square massacre anniversary

TechCrunch TechCrunch 1/06/2016 Catherine Shu

Tumblr is now apparently completely inaccessible in China., a non-profit that monitors censorship by the Chinese government, first spotted the lockout earlier this week.

Unlike other social media sites like Facebook and Twitter, Tumblr has managed to escape being completely banned in China (so far). According to’s web analyzer, a tool that shows what sites and keywords are currently blocked by the Great Firewall, access to Tumblr has been limited since May 25 and the platform was completely blocked on several days: May 26, May 30, and June 2 (today).

It’s difficult to know the exact reasons why social media sites get blocked in China when they do.’s historical data, however, shows that Tumblr was also more heavily blocked or restricted than usual in June 2014 and 2015. The Chinese government cracks down on social media and online searches annually around the anniversary of the Tiananmen Square massacre, which took place on June 3-4, 1989, in an effort to keep news and discussion about it from spreading.

There are large rallies every year in Hong Kong to memorialize the event, including one earlier this week. This year, families of Tiananmen Square victims also publicly accused the Chinese government of intimidation in an effort to prevent them from talking about the tragedy.

Tumblr was also blocked for several weeks in February and March 2011 after activists issued calls for pro-democracy demonstrations on social media platforms.

Other reasons why Tumblr might be currently firewalled include a sex tape that is currently going viral, as That’s Mag notes (online porn is banned in China), and more stringent online censorship measures that include a crackdown on the VPN services many people use to access blocked sites.

TechCrunch has contacted Tumblr for comment.

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