Wang Xizhe (王希哲), a pro-democracy activist and journalist, was arrested in 1981 and sentenced to 14 years in prison for making 'counter-revolutionary propaganda'.
Poster published in Hong Kong.

Quote:
"Back in 1969 when the Cultural Revolution was winding down from its climax and society was becoming peaceful once again, I was often struck by the sad memories of those comrades who fell down one after another beside me. For whom have we fought? For what have we died? I was then thinking of elucidating the causes and consequences of the Cultural Revolution and put them down in writing or I couldn't possibly stand up to those comrades who died. They couldn't have simply died for nothing....."