Hong Kong performance artist Sanmu Chen is taken away by police on the eve of the 35th anniversary of the Tiananmen Square crackdown. Chen appears to trace the Chinese characters of 8964 — which represents the anniversary date — in the air. As he walks away, police surround Chen and take him away in a police van. Last year, the performance artist was briefly arrested on the eve of the Tiananmen anniversary for chanting "Don’t forget June 4! Hong Kong people, don’t be afraid of them". He was not charged. IMAGES