Obama, who is on a week-long trip to China with her daughters and mother, has sought to focus on "soft" issues since her arrival in Beijing Thursday night, playing table tennis with students and touring the Forbidden City with her Chinese counterpart, Peng Liyuan.
But she briefly trod political ground in her morning speech today at Peking University's Stanford Centre, calling for greater freedoms while refraining from calling out China by name.
Her words echoed remarks made last December by US Vice President Joe Biden, who told a group of American business leaders in Beijing that China "will be stronger and more stable and more innovative if it respects universal human rights".
China's ruling Communist Party authorities are quick to crack down on political dissent, with a "Great Firewall of China" blocking access to Internet sites deemed sensitive and a vast censorship machine that swiftly deletes content considered objectionable.
