APIn this June 5, 1989 file photo,  a line of tanks heading east on Beijing's Changan Blvd. from Tiananmen Square in Beijing, gets attacked by protesters.
The 25th anniversary of the Tiananmen Square massacre is this week, and China is taking extreme measures to make sure nobody commemorates the event.
In 2012, China Digital Timesidentified more than 100 search terms China bans around the anniversary of Tiananmen Square. The country has already shut down Google services ahead of the 25th anniversary.
The government puts a lot of effort into erasing the 1989 massacre from books, TV, and internet resources that are available to its citizens. China's younger generation seems mostly unaware of the student-led, pro-democracy Tiananmen Square protests in Beijing that drove Chinese soldiers to kill hundreds (or possibly thousands) of people.
Some of the words and terms the government has blocked seem odd and out-of-place, but they're tied to the event and could bring up information about it. Some of these words were coded in an (unsuccessful) attempt to evade Chinese government censors.
Here's a list of some of the terms that have been blocked by censors both this year and in the past:
  • Big yellow duck (because an image circulated online showing giant toy ducks replacing military vehicles in the Tank Man photo, the same photo at the top of this post)
  • Tank Man (a reference to the above photo of a lone protester trying to block tanks)
  • Shanghai index (a reference to the Shanghai stock market closing down 64.89 points on 2012's anniversary)
  • 63 + 1 (because it adds up to 64, or June 4th)
  • 65-1
  • Candle (because the candle emoticon is commonly used online to mourn deaths)
  • Fire
  • Torch 
  • Oil lamp
  • Candle flame
  • Blood
  • Democracy
  • Autonomous
  • Twitter
  • Memorial event
  • Mobilize troops
  • Crush
  • Crush and destroy
  • Assemble
  • Revolt
  • Open fire
  • One-party dictatorship
  • Today
  • Tomorrow
  • Yesterday
  • Tiananmen
  • Square
  • Mourn
  • When spring becomes summer
  • That year
  • That day
  • Special day
  • Pillar of shame (a reference to sculptures symbolizing those who died in the massacre)
  • Victoria Park (where some of the sculptures were placed)
  • Evening event
  • Silent tribute
  • Recall
  • Ceremony
  • Little secretary
  • Black shirt
  • Black clothes
  • Redress
  • Commemorate
  • Demonstrate
  • Persecute
  • Conflict
  • Gunfire
  • Turmoil
  • Sensitive
  • Mothers of the Motherland
  • Hunger Strike Declaration
  • Operation Yellowbird
  • Non-violent non-cooperation
  • Chinese Spring
  • Take a walk
  • Member of standing committee
  • Gang of Four (Communist leaders)
  • Political bureau
  • Protest
  • Sit-in
  • Take to the streets
  • Go into the street
  • Never forget
  • Against bureaucratic profiteering (because it's part of a slogan from the Tiananmen protests)
  • Suppress
  • Tank
  • May 35
  • 35
  • Six Four
  • 64
  • June
  • Jun+4
  • Thirty-five
  • Twenty-four
  • Six+four
  • Six 4
  • 6 four
  • Liusi (Pinyin for "six four")
  • Bajiu (Pinyin for "eight nine")
  • Six four
  • Eight nine
  • Eight eight
  • TAM (abbreviation for Tiananmen)
  • Jinshuiqiao
  • Changan Avenue
  • Muxidi
  • Gongzhufen
  • Martial law
  • Student movement
  • Student strike
  • Student federation
  • Massacre
  • March
  • Beijing massacred