Tiananmen Square anniversary: Hong Kong police detain artist who made sign in the air

Sanmu Chen appeared to write the date of massacre in the air as anniversary becomes increasingly sensitive in Hong Kong

Hong Kong police detained an artist on Monday night after he appeared to write 8964" in the air with his hand, a reference to the date of the Tiananmen Square massacre, hours before Tuesday's 35th anniversary.

Public acknowledgment of the events of 4 June 1989, when Chinese soldiers shut down a weeks-long peaceful protest with violence, killing anything from several hundred to several thousand people - is banned in mainland China and increasingly sensitive in Hong Kong.