'The world has let this happen': Wu'er Kaixi on Hong Kong's loss of freedoms

A trial of former organizers of Hong Kong's Tiananmen vigils has concluded, prompting an interview with Wu'er Kaixi, a student leader from the 1989 protests. Nearly 37 years after the crackdown, the exiled campaigner criticizes China's continued suppression of dissidents and ethnic minorities, expressing concerns about Hong Kong's eroding freedoms.