(photo credit: CND.org?)
Today, on the 25th anniversary of troops being ordered into Tiananmen Square to clear student demonstrators, I tested several hundred June 4-related keywords on Weibo. I used the same set of keywords that I tested last year at The Citizen Lab, and I found relatively similar levels of censorship this year. Also like last year, the enhanced restrictions on keyword searches were apparently implemented specifically for the anniversary: for instance, 坦克 (tank) and 六四 (6-4, i.e., June 4) were free to be searched as recently as May 11.
A short article over at WSJ provides some more context and lists those 64 keywords that I identified as being blocked from searching on Weibo today. Of the keywords I tested, there were nine that were unblocked last year but have been added to the blacklist this year, including 八九 (89), 维多利亚公园 (Victoria Park, the site of the commemorative vigil in Hong Kong), and VIIV (roman numerals for June 4).
After the jump are the 64 keywords that are currently blocked from searching on Weibo (though some will no doubt be unblocked once this sensitive period passes):