Dogged activism keeps Tiananmen flame burning 36 years on

TOKYO -- Thirty-six years after Chinese authorities violently suppressed unarmed students and other civilians in and around Beijing's Tiananmen Square on June 4, 1989, dedicated groups and individuals around the world are keeping the memory alive.

Today, the center of the Chinese capital appears peaceful under tighter-than-usual surveillance, while in Hong Kong -- once a center for commemoration of the victims -- public displays have been rendered impossible by the strict national security law imposed five years ago.