A trial in Hong Kong has heard arguments that freedom of speech is not an absolute right, touching upon the sensitive anniversary of the Tiananmen Square crackdown. Hong Kong and Macau were historically unique in China for allowing public mourning of the event.

Hong Kong and Macau were once the only places in China where people could publicly mourn Beijing's deadly crackdown on pro-democracy demonstrators in Tiananmen Square on June 4, 1989