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One of the leaders of the protests on the Tiananmen square in 1986, Pu Zhiqiang spends the anniversary of the uprising in a Chinese detention centre.
The activist was arrested last month after a meeting to discuss the upcoming remembrance. Five other government critics also disappeared in police custody, including internet activist Liu Di, and Christian leader Hu Shigen.
Although the Chinese government in known to arrest prominent critics ahead of key political events, this year's crackdown was heavier than the years before.
The bloody protests on Tiananmen Square in 1989 are remembered annually with a candlelight vigil.
"We can definitely see the suspension of Pu Zhiqiang as a warning to civil society and to other lawyers ahead of June 4th," he explained.