Chinese authorities have begun censoring Google searches for "Shanghai stock market" after the markets in Shanghai fell by 64.89 points. Why? Well, 64.89 looks like 6/4/89, which is the date of the Tiananmen Square massacre. Even weirder, the market opened at 2346.98, which looks like the date backwards with a "23" next to it … and today is the 23rd anniversary of the massacre …