On Thursday night, Ai Weiwei’s son took the stage for the first time. Called up by Tate Modern director Chris Dercon, six-year-old Ai Lao, buttoned up in a blue blazer, jeans and Velcro sneakers, hopped up onstage at the Berliner Festspiele in his hometown, Berlin

Legendary folk singer Joan Baez and world-renowned artist Ai Weiwei – both committed activists – will be the joint recipients of Amnesty International’s Ambassador of Conscience Award for 2015, the human rights organization announced today.