Mourners mark Tiananmen crackdown anniversary under tight security
Relatives in Beijing mark 25 years since the Tiananmen crackdown as police patrols and censorship curb public commemoration. Yin Yin Min, whose son Ye Weihang died in 1989, holds his ashes and laments lack of power to seek accountability while authorities limit gatherings. U.S. Secretary of State John Kerry calls for freedom and releases of jailed protesters.