BEIJING -- Chinese authorities have tightened censorship of social media messages about pro-democracy activist Liu Xiaobo and his death last week in what is seen as a bid to keep dissent in check ahead of a major leadership reshuffle this fall.
Searching for Liu's name on the popular WeChat microblogging service still brings up a message that the results cannot be displayed. "RIP," short for "rest in peace," joined the blacklist after his death.
