today is the 25th year anniversary of the tiananmen square demonstrations. the six-week uprising that began with the sudden death of the reformer and evolved into a broader night for democracy. on june 4, 1989, the chinese government ordered a military crackdown on student protests. images from tiananmen square showed arm troops and tanks and people's liberation army suppressing the movement with a brutal efficiency, even shooting many protesters dead in the street. today in hong kong, thousand held a vigil. hong kong was not part of the mainland in 1989 and still remains a semiautonomous city state. one of the places connected to china where public demonstrations are occurring. why? that's because the government of course in beijing has spent decade suppressing even the mere existence of the tiananmen square protests. that means no discussion, news coverage and basic references to june 4th, this anniversary date, are scrubbed from the internet.