Not exactly , and nor do you, but there's no reason to think he would be allowed to berate a tank commander for iirc ~15 minutes including climbing up on the tank, then be secretly killed later. You believe the CPC had no problem killing however many people openly in the streets, in front of foreign diplomats and journalists, but this one dude had to be spirited away and secretly murdered? Please use a little common sense. I'm guessing you believe there were thousands killed in the protests. I'll allow that, it's hard to tell exactly what happened in Beijing over 30 years ago. You also believe I assume that those were peaceful protestors killed in cold blood. I don't know if you realise this but the events were documented by non-chinese sources including the Belgian ambassador to China - and the government knew that was going on at the time. What makes you think they suddenly became so squeamish around this one guy? Far more likely it's exactly what it looks like - he was led away by neighbours and the government just let sleeping dogs lie. There's nothing to be gained from going after him and no evidence that it happened.