In Berlin, Ian Johnson sat down with both writer Liao Yiwu, who has lived there since 2011, and Ai Weiwei, who recently traveled there after having his passport returned after a four-year confiscation:
This is your first time abroad in almost five years.  Did you have to agree to anything to come abroad? 
Ai: They always put pressure on me before I was arrested.  They were always saying certain things I should discuss.  I should not discuss politics. 
But you’re talking about them.