Events marking the day that Chinese soldiers shut down a peaceful protest with deadly violence are banned in China and Hong Kong
Chinese and Hong Kong authorities have arrested or put under surveillance several dissidents ahead of the anniversary of the Tiananmen Square Massacre this week, according to human rights groups.
On 4 June it will be 35 years since Chinese soldiers shut down a weeks-long peaceful protest with violence, killing untold numbers of people, estimated from several hundred to several thousand.