Some went missing. Some lost their freedom. Some can't escape the images inside their head, or the guilt they feel for surviving. The June 4, 1989, military crackdown to end weeks-long student protests is a key moment in the history of Communist-ruled China for the outside world. Within China, it is all but erased. Even personal acts of memory are considered subversive. While China's economy, society and cities have transformed in the last 25 years, the demonstrators and their supporters are keen to remind the world that other things haven't changed - that China's political masters are still suppressing dissent and freedom of expression. They call for the Communist Party to stop hiding what happened on that bloody night in which an untold number of people were killed. Some cling to their democratic fight.