Hong Kong chief executive John Lee warns citizens to be "responsible" for their own actions and says the city's police will take resolute action to enforce the law when asked about whether the public is allowed to publicly mourn the victims of the Tiananmen crackdown on June 4. This year marks the 34th anniversary of China's bloody crackdown on peaceful protesters in Beijing's Tiananmen Square on June 4, 1989. Hong Kong had been the one place in the country where large-scale remembrance was still tolerated -- until Beijing imposed a wide-reaching national security law two years ago, in reaction to citywide pro-democracy protests. SOUNDBITE