Back in 2006, rights lawyer Pu Zhiqiang wrote this about his encounter with the police while trying to commemorate June 4 in Beijing:
At 10:20 AM the police called my home to tell me that I could not go out. This meant, without their saying it, that Sun Di’s promise of a few hours earlier was no longer valid. Although I had half-expected this news, it angered me. I went downstairs to walk the dog. Three patrolmen from the National Security Unit of Fengtai District were already on duty at my door. They looked bedraggled from lack of sleep. I telephoned Sun Di from the spot. Since he had broken his promise, I had no choice but to send out a text message explaining that fact, I said. I hoped that he would stay in touch, though, both with me and with his superiors, and do what he could not to break his word too grievously. At least, I said, he should help me to keep my promise of a yearly visit to Tiananmen this evening. Then I walked the dog.
The police joined me on the walk, and afterward I invited one of them, with whom I was fairly well acquainted, to come upstairs for lunch. My elderly mother was home, and we didn’t often have guests, so she was delighted to have one. She made special dumplings, and the young policeman helped by rolling the dumpling skins. I was busy composing my text message about “the story that I had no choice but to tell.”
In the end, the cops 'co-ordinated' with Pu to the extent that he couldn't meet his friends on the Square at the time he'd arranged and then let him go.
At 9:30 PM Sun Di asked me to sign my name “confirming” that my summons had ended at 10 PM. It had begun at 2:30 PM, he said, and as long as it ended within eight hours it was legal. I congratulated him on the successful completion of his mission, which was, as both he and I knew, to thwart my plans to go to Tiananmen. On my side, though, the half-day detention at a police station made me feel as if I had, in fact, kept my promise to remember the massacre victims.
That was then. As of yesterday Pu Zhiqiang was put into 30 days criminal detention for 'creating a disturbance'. The disturbance consisted of a seminar held to commemorate the Tiananmen dead over the weekend. A number of others who attended the seminar have also been given the same treatment. The reason police waited a couple of days to arrest Pu and his colleagues is so that his detention period will end on June 5, the day after the massacre.